31255004430313 has 2 divisors, whose sum is σ = 31255004430314. Its totient is φ = 31255004430312.

The previous prime is 31255004430193. The next prime is 31255004430329. The reversal of 31255004430313 is 31303440055213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30055920299584 + 1199084130729 = 5482328^2 + 1095027^2 .

It is a cyclic number.

It is not a de Polignac number, because 31255004430313 - 2⁹ = 31255004429801 is a prime.

It is not a weakly prime, because it can be changed into another prime (31255004430113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15627502215156 + 15627502215157.

It is an arithmetic number, because the mean of its divisors is an integer number (15627502215157).

Almost surely, 2^{31255004430313} is an apocalyptic number.

It is an amenable number.

31255004430313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31255004430313 is an equidigital number, since it uses as much as digits as its factorization.

31255004430313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 31255004430313 its reverse (31303440055213), we get a palindrome (62558444485526).

The spelling of 31255004430313 in words is "thirty-one trillion, two hundred fifty-five billion, four million, four hundred thirty thousand, three hundred thirteen".