31887231234 has 16 divisors (see below), whose sum is σ = 66547265472. Its totient is φ = 10166943248.

The previous prime is 31887231149. The next prime is 31887231319. The reversal of 31887231234 is 43213278813.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31887231149) and next prime (31887231319).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115533309 + ... + 115533584.

It is an arithmetic number, because the mean of its divisors is an integer number (4159204092).

Almost surely, 2^31887231234 is an apocalyptic number.

31887231234 is an abundant number, since it is smaller than the sum of its proper divisors (34660034238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31887231234 is a wasteful number, since it uses less digits than its factorization.

31887231234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231066921.

The product of its digits is 193536, while the sum is 42.

The spelling of 31887231234 in words is "thirty-one billion, eight hundred eighty-seven million, two hundred thirty-one thousand, two hundred thirty-four".