31040264 has 8 divisors (see below), whose sum is σ = 58200510. Its totient is φ = 15520128.

The previous prime is 31040231. The next prime is 31040293. The reversal of 31040264 is 46204013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 1119364 = 5470^2 + 1058^2 .

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

It is an unprimeable number.

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, 1940009 + ... + 1940024.

Almost surely, 2^31040264 is an apocalyptic number.

It is an amenable number.

31040264 is a deficient number, since it is larger than the sum of its proper divisors (27160246).

31040264 is a wasteful number, since it uses less digits than its factorization.

31040264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880039 (or 3880035 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 31040264 is about 5571.3790034425. The cubic root of 31040264 is about 314.2740112919.

Adding to 31040264 its reverse (46204013), we get a palindrome (77244277).

The spelling of 31040264 in words is "thirty-one million, forty thousand, two hundred sixty-four".