31404373868 has 96 divisors (see below), whose sum is σ = 65868042240. Its totient is φ = 12822001920.

The previous prime is 31404373843. The next prime is 31404373873. The reversal of 31404373868 is 86837340413.

It is a super-2 number, since 2×31404373868² (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, 11548613 + ... + 11551331.

It is an arithmetic number, because the mean of its divisors is an integer number (686125440).

Almost surely, 2^31404373868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31404373868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32934021120).

31404373868 is an abundant number, since it is smaller than the sum of its proper divisors (34463668372).

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

31404373868 is a wasteful number, since it uses less digits than its factorization.

31404373868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 31404373868 in words is "thirty-one billion, four hundred four million, three hundred seventy-three thousand, eight hundred sixty-eight".