31130113037 has 2 divisors, whose sum is σ = 31130113038. Its totient is φ = 31130113036.

The previous prime is 31130113033. The next prime is 31130113093. The reversal of 31130113037 is 73031103113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30973888036 + 156225001 = 175994^2 + 12499^2 .

It is a cyclic number.

It is not a de Polignac number, because 31130113037 - 2² = 31130113033 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31130113033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565056518 + 15565056519.

It is an arithmetic number, because the mean of its divisors is an integer number (15565056519).

Almost surely, 2^31130113037 is an apocalyptic number.

It is an amenable number.

31130113037 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130113037 is an equidigital number, since it uses as much as digits as its factorization.

31130113037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 23.

The spelling of 31130113037 in words is "thirty-one billion, one hundred thirty million, one hundred thirteen thousand, thirty-seven".