232520129 has 2 divisors, whose sum is σ = 232520130. Its totient is φ = 232520128.

The previous prime is 232520117. The next prime is 232520137. The reversal of 232520129 is 921025232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188430529 + 44089600 = 13727^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 232520129 - 2¹² = 232516033 is a prime.

It is a super-2 number, since 2×232520129² = 108131220780353282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 232520098 and 232520107.

It is not a weakly prime, because it can be changed into another prime (232520149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116260064 + 116260065.

It is an arithmetic number, because the mean of its divisors is an integer number (116260065).

Almost surely, 2^232520129 is an apocalyptic number.

It is an amenable number.

232520129 is a deficient number, since it is larger than the sum of its proper divisors (1).

232520129 is an equidigital number, since it uses as much as digits as its factorization.

232520129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 232520129 is about 15248.6107236036. The cubic root of 232520129 is about 614.9222181137.

The spelling of 232520129 in words is "two hundred thirty-two million, five hundred twenty thousand, one hundred twenty-nine".