31707712 has 14 divisors (see below), whose sum is σ = 62920118. Its totient is φ = 15853824.

The previous prime is 31707679. The next prime is 31707749. The reversal of 31707712 is 21770713.

It can be written as a sum of positive squares in only one way, i.e., 16777216 + 14930496 = 4096^2 + 3864^2 .

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 as a sum of consecutive naturals, namely, 247653 + ... + 247780.

Almost surely, 2^31707712 is an apocalyptic number.

31707712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31707712 is a deficient number, since it is larger than the sum of its proper divisors (31212406).

31707712 is an equidigital number, since it uses as much as digits as its factorization.

31707712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495445 (or 495435 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 31707712 is about 5630.9601312742. The cubic root of 31707712 is about 316.5106309139.

The spelling of 31707712 in words is "thirty-one million, seven hundred seven thousand, seven hundred twelve".