31994125 has 16 divisors (see below), whose sum is σ = 40105728. Its totient is φ = 25482000.

The previous prime is 31994117. The next prime is 31994147. The reversal of 31994125 is 52149913.

It is not a de Polignac number, because 31994125 - 2³ = 31994117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38464 + ... + 39286.

It is an arithmetic number, because the mean of its divisors is an integer number (2506608).

Almost surely, 2^31994125 is an apocalyptic number.

It is an amenable number.

31994125 is a deficient number, since it is larger than the sum of its proper divisors (8111603).

31994125 is an equidigital number, since it uses as much as digits as its factorization.

31994125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1139 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 31994125 is about 5656.3349441135. The cubic root of 31994125 is about 317.4607800770.

The spelling of 31994125 in words is "thirty-one million, nine hundred ninety-four thousand, one hundred twenty-five".