31044136 has 8 divisors (see below), whose sum is σ = 58207770. Its totient is φ = 15522064.

The previous prime is 31044133. The next prime is 31044137. The reversal of 31044136 is 63144013.

It can be written as a sum of positive squares in only one way, i.e., 26071236 + 4972900 = 5106^2 + 2230^2 .

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 (31044133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940251 + ... + 1940266.

Almost surely, 2^31044136 is an apocalyptic number.

It is an amenable number.

31044136 is a deficient number, since it is larger than the sum of its proper divisors (27163634).

31044136 is a wasteful number, since it uses less digits than its factorization.

31044136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880523 (or 3880519 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 31044136 is about 5571.7264828776. The cubic root of 31044136 is about 314.2870783884.

Adding to 31044136 its reverse (63144013), we get a palindrome (94188149).

The spelling of 31044136 in words is "thirty-one million, forty-four thousand, one hundred thirty-six".