31722674 has 4 divisors (see below), whose sum is σ = 47584014. Its totient is φ = 15861336.

The previous prime is 31722671. The next prime is 31722689. The reversal of 31722674 is 47622713.

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., 25938649 + 5784025 = 5093^2 + 2405^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31722674.

It is not an unprimeable number, because it can be changed into a prime (31722671) by changing a digit.

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, 7930667 + ... + 7930670.

Almost surely, 2^31722674 is an apocalyptic number.

31722674 is a deficient number, since it is larger than the sum of its proper divisors (15861340).

31722674 is a wasteful number, since it uses less digits than its factorization.

31722674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15861339.

The product of its digits is 14112, while the sum is 32.

The square root of 31722674 is about 5632.2885224392. The cubic root of 31722674 is about 316.5604073151.

The spelling of 31722674 in words is "thirty-one million, seven hundred twenty-two thousand, six hundred seventy-four".