31994525 has 12 divisors (see below), whose sum is σ = 39765312. Its totient is φ = 25536240.

The previous prime is 31994519. The next prime is 31994533. The reversal of 31994525 is 52549913.

It is not a de Polignac number, because 31994525 - 2¹⁰ = 31993501 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11852 + ... + 14298.

It is an arithmetic number, because the mean of its divisors is an integer number (3313776).

Almost surely, 2^31994525 is an apocalyptic number.

It is an amenable number.

31994525 is a deficient number, since it is larger than the sum of its proper divisors (7770787).

31994525 is a wasteful number, since it uses less digits than its factorization.

31994525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2975 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 31994525 is about 5656.3703025880. The cubic root of 31994525 is about 317.4621030677.

The spelling of 31994525 in words is "thirty-one million, nine hundred ninety-four thousand, five hundred twenty-five".