31404375168 has 64 divisors (see below), whose sum is σ = 87044760000. Its totient is φ = 10012986368.

The previous prime is 31404375161. The next prime is 31404375187. The reversal of 31404375168 is 86157340413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (31404375161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769043 + ... + 1786706.

It is an arithmetic number, because the mean of its divisors is an integer number (1360074375).

Almost surely, 2^31404375168 is an apocalyptic number.

It is an amenable number.

31404375168 is an abundant number, since it is smaller than the sum of its proper divisors (55640384832).

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

31404375168 is a wasteful number, since it uses less digits than its factorization.

31404375168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555789 (or 3555777 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 31404375168 in words is "thirty-one billion, four hundred four million, three hundred seventy-five thousand, one hundred sixty-eight".