31291679004 has 48 divisors (see below), whose sum is σ = 73817878176. Its totient is φ = 10315936000.

The previous prime is 31291678993. The next prime is 31291679021. The reversal of 31291679004 is 40097619213.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 1126774 + ... + 1154210.

It is an arithmetic number, because the mean of its divisors is an integer number (1537872462).

Almost surely, 2^31291679004 is an apocalyptic number.

It is an amenable number.

31291679004 is an abundant number, since it is smaller than the sum of its proper divisors (42526199172).

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

31291679004 is a wasteful number, since it uses less digits than its factorization.

31291679004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28486 (or 28484 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 31291679004 in words is "thirty-one billion, two hundred ninety-one million, six hundred seventy-nine thousand, four".