232031135500421 has 2 divisors, whose sum is σ = 232031135500422. Its totient is φ = 232031135500420.

The previous prime is 232031135500399. The next prime is 232031135500433. The reversal of 232031135500421 is 124005531130232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227503223904100 + 4527911596321 = 15083210^2 + 2127889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232031135500421 is a prime.

It is a super-2 number, since 2×232031135500421² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232031135500621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116015567750210 + 116015567750211.

It is an arithmetic number, because the mean of its divisors is an integer number (116015567750211).

Almost surely, 2^{232031135500421} is an apocalyptic number.

It is an amenable number.

232031135500421 is a deficient number, since it is larger than the sum of its proper divisors (1).

232031135500421 is an equidigital number, since it uses as much as digits as its factorization.

232031135500421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 232031135500421 its reverse (124005531130232), we get a palindrome (356036666630653).

The spelling of 232031135500421 in words is "two hundred thirty-two trillion, thirty-one billion, one hundred thirty-five million, five hundred thousand, four hundred twenty-one".