231632774251 has 2 divisors, whose sum is σ = 231632774252. Its totient is φ = 231632774250.

The previous prime is 231632774237. The next prime is 231632774257. The reversal of 231632774251 is 152477236132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231632774251 - 2⁹ = 231632773739 is a prime.

It is a super-2 number, since 2×231632774251² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231632774198 and 231632774207.

It is not a weakly prime, because it can be changed into another prime (231632774257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115816387125 + 115816387126.

It is an arithmetic number, because the mean of its divisors is an integer number (115816387126).

Almost surely, 2^231632774251 is an apocalyptic number.

231632774251 is a deficient number, since it is larger than the sum of its proper divisors (1).

231632774251 is an equidigital number, since it uses as much as digits as its factorization.

231632774251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The spelling of 231632774251 in words is "two hundred thirty-one billion, six hundred thirty-two million, seven hundred seventy-four thousand, two hundred fifty-one".