31700313 has 12 divisors (see below), whose sum is σ = 46473648. Its totient is φ = 20817720.

The previous prime is 31700311. The next prime is 31700329. The reversal of 31700313 is 31300713.

It is not a de Polignac number, because 31700313 - 2¹ = 31700311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31700311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25683 + ... + 26888.

It is an arithmetic number, because the mean of its divisors is an integer number (3872804).

Almost surely, 2^31700313 is an apocalyptic number.

It is an amenable number.

31700313 is a deficient number, since it is larger than the sum of its proper divisors (14773335).

31700313 is a wasteful number, since it uses less digits than its factorization.

31700313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52644 (or 52641 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 18.

The square root of 31700313 is about 5630.3031001892. The cubic root of 31700313 is about 316.4860097288.

The spelling of 31700313 in words is "thirty-one million, seven hundred thousand, three hundred thirteen".