31745748 has 12 divisors (see below), whose sum is σ = 74073440. Its totient is φ = 10581912.

The previous prime is 31745743. The next prime is 31745759. The reversal of 31745748 is 84754713.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31745743) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1322728 + ... + 1322751.

Almost surely, 2^31745748 is an apocalyptic number.

It is an amenable number.

31745748 is an abundant number, since it is smaller than the sum of its proper divisors (42327692).

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

31745748 is a wasteful number, since it uses less digits than its factorization.

31745748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645486 (or 2645484 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 31745748 is about 5634.3365181714. The cubic root of 31745748 is about 316.6371404911.

The spelling of 31745748 in words is "thirty-one million, seven hundred forty-five thousand, seven hundred forty-eight".