20³ – 19³ = 1141 so 1141 is the 20th centered hexagonal number:

Here’s more about the number 1141:

• 1141 is a composite number.
• Prime factorization: 1141 = 5 × 163
• The exponents in the prime factorization are 1 and 1. Adding one to each and multiplying we get (1 + 1)(1 + 1) = 2 × 2 = 4. Therefore 1141 has exactly 4 factors.
• Factors of 1141: 1, 5, 163, 1141
• Factor pairs: 1141 = 1 × 1141 or 5 × 163
• 1141 has no square factors that allow its square root to be simplified. √1141 ≈ 33.77869

5º(31²) + 5¹(31¹) + 5²(31º) = 1141

1141 is palindrome 181 in BASE 30 because 30² + 8(30) + 1 = 1141