31696474 has 4 divisors (see below), whose sum is σ = 47544714. Its totient is φ = 15848236.

The previous prime is 31696453. The next prime is 31696487. The reversal of 31696474 is 47469613.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22043025 + 9653449 = 4695^2 + 3107^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7924117 + ... + 7924120.

Almost surely, 2^31696474 is an apocalyptic number.

31696474 is a deficient number, since it is larger than the sum of its proper divisors (15848240).

31696474 is a wasteful number, since it uses less digits than its factorization.

31696474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15848239.

The product of its digits is 108864, while the sum is 40.

The square root of 31696474 is about 5629.9621668356. The cubic root of 31696474 is about 316.4732334213.

The spelling of 31696474 in words is "thirty-one million, six hundred ninety-six thousand, four hundred seventy-four".