231632392487 has 2 divisors, whose sum is σ = 231632392488. Its totient is φ = 231632392486.

The previous prime is 231632392483. The next prime is 231632392571. The reversal of 231632392487 is 784293236132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231632392487 - 2² = 231632392483 is a prime.

It is a super-2 number, since 2×231632392487² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231632392483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115816196243 + 115816196244.

It is an arithmetic number, because the mean of its divisors is an integer number (115816196244).

Almost surely, 2^231632392487 is an apocalyptic number.

231632392487 is a deficient number, since it is larger than the sum of its proper divisors (1).

231632392487 is an equidigital number, since it uses as much as digits as its factorization.

231632392487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 50.

The spelling of 231632392487 in words is "two hundred thirty-one billion, six hundred thirty-two million, three hundred ninety-two thousand, four hundred eighty-seven".