31302344320913 has 2 divisors, whose sum is σ = 31302344320914. Its totient is φ = 31302344320912.

The previous prime is 31302344320903. The next prime is 31302344320999. The reversal of 31302344320913 is 31902344320313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28323503052289 + 2978841268624 = 5321983^2 + 1725932^2 .

It is a cyclic number.

It is not a de Polignac number, because 31302344320913 - 2¹⁴ = 31302344304529 is a prime.

It is not a weakly prime, because it can be changed into another prime (31302344320903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651172160456 + 15651172160457.

It is an arithmetic number, because the mean of its divisors is an integer number (15651172160457).

Almost surely, 2^{31302344320913} is an apocalyptic number.

It is an amenable number.

31302344320913 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302344320913 is an equidigital number, since it uses as much as digits as its factorization.

31302344320913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 31302344320913 in words is "thirty-one trillion, three hundred two billion, three hundred forty-four million, three hundred twenty thousand, nine hundred thirteen".