31613718948 has 48 divisors (see below), whose sum is σ = 84820485120. Its totient is φ = 8977073184.

The previous prime is 31613718947. The next prime is 31613718973. The reversal of 31613718948 is 84981731613.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31613718948.

It is not an unprimeable number, because it can be changed into a prime (31613718943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140768 + ... + 1168151.

It is an arithmetic number, because the mean of its divisors is an integer number (1767093440).

Almost surely, 2^31613718948 is an apocalyptic number.

It is an amenable number.

31613718948 is an abundant number, since it is smaller than the sum of its proper divisors (53206766172).

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

31613718948 is a wasteful number, since it uses less digits than its factorization.

31613718948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309096 (or 2309094 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 31613718948 in words is "thirty-one billion, six hundred thirteen million, seven hundred eighteen thousand, nine hundred forty-eight".