31940264 has 8 divisors (see below), whose sum is σ = 59888010. Its totient is φ = 15970128.

The previous prime is 31940243. The next prime is 31940267. The reversal of 31940264 is 46204913.

It can be written as a sum of positive squares in only one way, i.e., 16337764 + 15602500 = 4042^2 + 3950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31940267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996259 + ... + 1996274.

Almost surely, 2^31940264 is an apocalyptic number.

It is an amenable number.

31940264 is a deficient number, since it is larger than the sum of its proper divisors (27947746).

31940264 is a wasteful number, since it uses less digits than its factorization.

31940264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992539 (or 3992535 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 31940264 is about 5651.5718167604. The cubic root of 31940264 is about 317.2825352783.

The spelling of 31940264 in words is "thirty-one million, nine hundred forty thousand, two hundred sixty-four".