31130504 has 16 divisors (see below), whose sum is σ = 59471820. Its totient is φ = 15271360.

The previous prime is 31130461. The next prime is 31130507. The reversal of 31130504 is 40503113.

It can be written as a sum of positive squares in 2 ways, for example, as 30228004 + 902500 = 5498^2 + 950^2 .

It is not an unprimeable number, because it can be changed into a prime (31130507) 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, 36287 + ... + 37134.

Almost surely, 2^31130504 is an apocalyptic number.

It is an amenable number.

31130504 is a deficient number, since it is larger than the sum of its proper divisors (28341316).

31130504 is a wasteful number, since it uses less digits than its factorization.

31130504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73480 (or 73476 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 31130504 is about 5579.4716595749. The cubic root of 31130504 is about 314.5782682439.

Adding to 31130504 its reverse (40503113), we get a palindrome (71633617).

The spelling of 31130504 in words is "thirty-one million, one hundred thirty thousand, five hundred four".