31990483008 has 448 divisors, whose sum is σ = 108723379200. Its totient is φ = 9122181120.

The previous prime is 31990483001. The next prime is 31990483037. The reversal of 31990483008 is 80038409913.

It is not an unprimeable number, because it can be changed into a prime (31990483001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102205860 + ... + 102206172.

Almost surely, 2^31990483008 is an apocalyptic number.

31990483008 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31990483008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54361689600).

31990483008 is an abundant number, since it is smaller than the sum of its proper divisors (76732896192).

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

31990483008 is a wasteful number, since it uses less digits than its factorization.

31990483008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 31990483008 in words is "thirty-one billion, nine hundred ninety million, four hundred eighty-three thousand, eight".