31130913923 has 2 divisors, whose sum is σ = 31130913924. Its totient is φ = 31130913922.

The previous prime is 31130913917. The next prime is 31130914007. The reversal of 31130913923 is 32931903113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31130913923 - 2²⁴ = 31114136707 is a prime.

It is not a weakly prime, because it can be changed into another prime (31130913323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565456961 + 15565456962.

It is an arithmetic number, because the mean of its divisors is an integer number (15565456962).

Almost surely, 2^31130913923 is an apocalyptic number.

31130913923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130913923 is an equidigital number, since it uses as much as digits as its factorization.

31130913923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 31130913923 in words is "thirty-one billion, one hundred thirty million, nine hundred thirteen thousand, nine hundred twenty-three".