31331000338 has 64 divisors (see below), whose sum is σ = 55686528000. Its totient is φ = 13070756160.

The previous prime is 31331000303. The next prime is 31331000347. The reversal of 31331000338 is 83300013313.

It is a super-2 number, since 2×31331000338² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2385313 + ... + 2398411.

It is an arithmetic number, because the mean of its divisors is an integer number (870102000).

Almost surely, 2^31331000338 is an apocalyptic number.

31331000338 is the 94614-th centered heptagonal number.

31331000338 is a deficient number, since it is larger than the sum of its proper divisors (24355527662).

31331000338 is a wasteful number, since it uses less digits than its factorization.

31331000338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13327.

The product of its (nonzero) digits is 1944, while the sum is 25.

The spelling of 31331000338 in words is "thirty-one billion, three hundred thirty-one million, three hundred thirty-eight", and thus it is an aban number.