231632775251 has 2 divisors, whose sum is σ = 231632775252. Its totient is φ = 231632775250.

The previous prime is 231632775197. The next prime is 231632775293. The reversal of 231632775251 is 152577236132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231632775251 - 2¹⁰ = 231632774227 is a prime.

It is a super-2 number, since 2×231632775251² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231632774251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115816387625 + 115816387626.

It is an arithmetic number, because the mean of its divisors is an integer number (115816387626).

Almost surely, 2^231632775251 is an apocalyptic number.

231632775251 is a deficient number, since it is larger than the sum of its proper divisors (1).

231632775251 is an equidigital number, since it uses as much as digits as its factorization.

231632775251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 44.

The spelling of 231632775251 in words is "two hundred thirty-one billion, six hundred thirty-two million, seven hundred seventy-five thousand, two hundred fifty-one".