31703796 has 18 divisors (see below), whose sum is σ = 80140242. Its totient is φ = 10567920.

The previous prime is 31703753. The next prime is 31703813. The reversal of 31703796 is 69730713.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 1299600 = 5514^2 + 1140^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 880661 = 31703796 / (3 + 1 + 7 + 0 + 3 + 7 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 31703796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 440295 + ... + 440366.

Almost surely, 2^31703796 is an apocalyptic number.

31703796 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31703796 is an abundant number, since it is smaller than the sum of its proper divisors (48436446).

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

31703796 is a wasteful number, since it uses less digits than its factorization.

31703796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880671 (or 880666 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 31703796 is about 5630.6124000858. The cubic root of 31703796 is about 316.4976003651.

The spelling of 31703796 in words is "thirty-one million, seven hundred three thousand, seven hundred ninety-six".