31994112 has 36 divisors (see below), whose sum is σ = 85153040. Its totient is φ = 10664448.

The previous prime is 31994111. The next prime is 31994117. The reversal of 31994112 is 21149913.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31994112.

It is not an unprimeable number, because it can be changed into a prime (31994111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20062 + ... + 21597.

Almost surely, 2^31994112 is an apocalyptic number.

31994112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31994112 is an abundant number, since it is smaller than the sum of its proper divisors (53158928).

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

31994112 is an equidigital number, since it uses as much as digits as its factorization.

31994112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41678 (or 41664 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 31994112 is about 5656.3337949594. Note that the first 3 decimals coincide. The cubic root of 31994112 is about 317.4607370797.

The spelling of 31994112 in words is "thirty-one million, nine hundred ninety-four thousand, one hundred twelve".