231001323251 has 2 divisors, whose sum is σ = 231001323252. Its totient is φ = 231001323250.

The previous prime is 231001323191. The next prime is 231001323263. The reversal of 231001323251 is 152323100132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231001323251 - 2³⁰ = 229927581427 is a prime.

It is a super-2 number, since 2×231001323251² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231001323451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115500661625 + 115500661626.

It is an arithmetic number, because the mean of its divisors is an integer number (115500661626).

Almost surely, 2^231001323251 is an apocalyptic number.

231001323251 is a deficient number, since it is larger than the sum of its proper divisors (1).

231001323251 is an equidigital number, since it uses as much as digits as its factorization.

231001323251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 231001323251 its reverse (152323100132), we get a palindrome (383324423383).

The spelling of 231001323251 in words is "two hundred thirty-one billion, one million, three hundred twenty-three thousand, two hundred fifty-one".