31585190023 has 2 divisors, whose sum is σ = 31585190024. Its totient is φ = 31585190022.

The previous prime is 31585189991. The next prime is 31585190033. The reversal of 31585190023 is 32009158513.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31585190023 - 2⁵ = 31585189991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31585190033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15792595011 + 15792595012.

It is an arithmetic number, because the mean of its divisors is an integer number (15792595012).

Almost surely, 2^31585190023 is an apocalyptic number.

31585190023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31585190023 is an equidigital number, since it uses as much as digits as its factorization.

31585190023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 31585190023 in words is "thirty-one billion, five hundred eighty-five million, one hundred ninety thousand, twenty-three".