31912447195904 has 216 divisors, whose sum is σ = 71461756988160. Its totient is φ = 14208454656000.

The previous prime is 31912447195897. The next prime is 31912447196009. The reversal of 31912447195904 is 40959174421913.

It is a super-2 number, since 2×31912447195904² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455343137 + ... + 455413215.

Almost surely, 2^{31912447195904} 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 31912447195904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35730878494080).

31912447195904 is an abundant number, since it is smaller than the sum of its proper divisors (39549309792256).

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

31912447195904 is a wasteful number, since it uses less digits than its factorization.

31912447195904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70419 (or 70394 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 31912447195904 in words is "thirty-one trillion, nine hundred twelve billion, four hundred forty-seven million, one hundred ninety-five thousand, nine hundred four".