31314638384 has 40 divisors (see below), whose sum is σ = 64446477840. Its totient is φ = 14689179648.

The previous prime is 31314638353. The next prime is 31314638389. The reversal of 31314638384 is 48383641313.

It is a super-2 number, since 2×31314638384² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31314638389) 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, 98774 + ... + 269045.

It is an arithmetic number, because the mean of its divisors is an integer number (1611161946).

Almost surely, 2^31314638384 is an apocalyptic number.

31314638384 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31314638384 is an abundant number, since it is smaller than the sum of its proper divisors (33131839456).

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

31314638384 is a wasteful number, since it uses less digits than its factorization.

31314638384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368157 (or 368151 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The spelling of 31314638384 in words is "thirty-one billion, three hundred fourteen million, six hundred thirty-eight thousand, three hundred eighty-four".