31906533376 has 39 divisors (see below), whose sum is σ = 63828146343. Its totient is φ = 15947550720.

The previous prime is 31906533227. The next prime is 31906533401. The reversal of 31906533376 is 67333560913.

The square root of 31906533376 is 178624.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11430541 + ... + 11433331.

It is an arithmetic number, because the mean of its divisors is an integer number (1636619137).

Almost surely, 2^31906533376 is an apocalyptic number.

31906533376 is the 178624-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31906533376

31906533376 is an abundant number, since it is smaller than the sum of its proper divisors (31921612967).

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

31906533376 is an frugal number, since it uses more digits than its factorization.

31906533376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 46.

The spelling of 31906533376 in words is "thirty-one billion, nine hundred six million, five hundred thirty-three thousand, three hundred seventy-six".