31948812 has 36 divisors (see below), whose sum is σ = 92297296. Its totient is φ = 9128160.

The previous prime is 31948801. The next prime is 31948837. The reversal of 31948812 is 21884913.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×31948812² = 2041453176422688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63139 + ... + 63642.

Almost surely, 2^31948812 is an apocalyptic number.

It is an amenable number.

31948812 is an abundant number, since it is smaller than the sum of its proper divisors (60348484).

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

31948812 is a wasteful number, since it uses less digits than its factorization.

31948812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126798 (or 126793 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 31948812 is about 5652.3280159594. The cubic root of 31948812 is about 317.3108369563.

The spelling of 31948812 in words is "thirty-one million, nine hundred forty-eight thousand, eight hundred twelve".