31326916 has 12 divisors (see below), whose sum is σ = 55721260. Its totient is φ = 15406560.

The previous prime is 31326899. The next prime is 31326917. The reversal of 31326916 is 61962313.

It can be written as a sum of positive squares in 2 ways, for example, as 17189316 + 14137600 = 4146^2 + 3760^2 .

It is not an unprimeable number, because it can be changed into a prime (31326917) 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 in 3 ways as a sum of consecutive naturals, for example, 63951 + ... + 64438.

Almost surely, 2^31326916 is an apocalyptic number.

It is an amenable number.

31326916 is a deficient number, since it is larger than the sum of its proper divisors (24394344).

31326916 is a wasteful number, since it uses less digits than its factorization.

31326916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128454 (or 128452 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 31326916 is about 5597.0452919375. The cubic root of 31326916 is about 315.2384723111.

The spelling of 31326916 in words is "thirty-one million, three hundred twenty-six thousand, nine hundred sixteen".