31456992 has 48 divisors (see below), whose sum is σ = 94372992. Its totient is φ = 8987520.

The previous prime is 31456949. The next prime is 31457009. The reversal of 31456992 is 29965413.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 31456992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22734 + ... + 24077.

It is an arithmetic number, because the mean of its divisors is an integer number (1966104).

Almost surely, 2^31456992 is an apocalyptic number.

31456992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31456992 is an abundant number, since it is smaller than the sum of its proper divisors (62916000).

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

31456992 is a wasteful number, since it uses less digits than its factorization.

31456992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46831 (or 46823 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 31456992 is about 5608.6533142993. The cubic root of 31456992 is about 315.6741821473.

The spelling of 31456992 in words is "thirty-one million, four hundred fifty-six thousand, nine hundred ninety-two".