31230252538 has 16 divisors (see below), whose sum is σ = 49488959520. Its totient is φ = 14739867216.

The previous prime is 31230252451. The next prime is 31230252551. The reversal of 31230252538 is 83525203213.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1472956 + ... + 1494007.

It is an arithmetic number, because the mean of its divisors is an integer number (3093059970).

Almost surely, 2^31230252538 is an apocalyptic number.

31230252538 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

31230252538 is a deficient number, since it is larger than the sum of its proper divisors (18258706982).

31230252538 is a wasteful number, since it uses less digits than its factorization.

31230252538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967261.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 31230252538 in words is "thirty-one billion, two hundred thirty million, two hundred fifty-two thousand, five hundred thirty-eight".