31130507 has 2 divisors, whose sum is σ = 31130508. Its totient is φ = 31130506.

The previous prime is 31130461. The next prime is 31130513. The reversal of 31130507 is 70503113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31130507 - 2⁸ = 31130251 is a prime.

It is not a weakly prime, because it can be changed into another prime (31130527) 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 as a sum of consecutive naturals, namely, 15565253 + 15565254.

It is an arithmetic number, because the mean of its divisors is an integer number (15565254).

Almost surely, 2^31130507 is an apocalyptic number.

31130507 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130507 is an equidigital number, since it uses as much as digits as its factorization.

31130507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 31130507 is about 5579.4719284176. The cubic root of 31130507 is about 314.5782783491.

The spelling of 31130507 in words is "thirty-one million, one hundred thirty thousand, five hundred seven".