31056436 has 12 divisors (see below), whose sum is σ = 54405540. Its totient is φ = 15512000.

The previous prime is 31056407. The next prime is 31056437. The reversal of 31056436 is 63465013.

It can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 25948836 = 2260^2 + 5094^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31056437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936 + ... + 7936.

It is an arithmetic number, because the mean of its divisors is an integer number (4533795).

Almost surely, 2^31056436 is an apocalyptic number.

It is an amenable number.

31056436 is a deficient number, since it is larger than the sum of its proper divisors (23349104).

31056436 is a wasteful number, since it uses less digits than its factorization.

31056436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114 (or 8112 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 31056436 is about 5572.8301606993. The cubic root of 31056436 is about 314.3285808118.

The spelling of 31056436 in words is "thirty-one million, fifty-six thousand, four hundred thirty-six".