31238642862 has 48 divisors (see below), whose sum is σ = 81424037760. Its totient is φ = 8455571856.

The previous prime is 31238642833. The next prime is 31238642863. The reversal of 31238642862 is 26824683213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31238642863) 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 in 23 ways as a sum of consecutive naturals, for example, 6521968 + ... + 6526755.

It is an arithmetic number, because the mean of its divisors is an integer number (1696334120).

Almost surely, 2^31238642862 is an apocalyptic number.

31238642862 is an abundant number, since it is smaller than the sum of its proper divisors (50185394898).

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

31238642862 is a wasteful number, since it uses less digits than its factorization.

31238642862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13048757 (or 13048754 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 31238642862 in words is "thirty-one billion, two hundred thirty-eight million, six hundred forty-two thousand, eight hundred sixty-two".