31116953644 has 48 divisors (see below), whose sum is σ = 65000613888. Its totient is φ = 12744059328.

The previous prime is 31116953603. The next prime is 31116953653. The reversal of 31116953644 is 44635961113.

It is a self number, because there is not a number n which added to its sum of digits gives 31116953644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681789 + ... + 725995.

It is an arithmetic number, because the mean of its divisors is an integer number (1354179456).

Almost surely, 2^31116953644 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 31116953644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32500306944).

31116953644 is an abundant number, since it is smaller than the sum of its proper divisors (33883660244).

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

31116953644 is a wasteful number, since it uses less digits than its factorization.

31116953644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45334 (or 45332 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The spelling of 31116953644 in words is "thirty-one billion, one hundred sixteen million, nine hundred fifty-three thousand, six hundred forty-four".