313023013100521 has 2 divisors, whose sum is σ = 313023013100522. Its totient is φ = 313023013100520.

The previous prime is 313023013100489. The next prime is 313023013100537. The reversal of 313023013100521 is 125001310320313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261855958897296 + 51167054203225 = 16181964^2 + 7153115^2 .

It is a cyclic number.

It is not a de Polignac number, because 313023013100521 - 2⁵ = 313023013100489 is a prime.

It is not a weakly prime, because it can be changed into another prime (313023013100221) 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, 156511506550260 + 156511506550261.

It is an arithmetic number, because the mean of its divisors is an integer number (156511506550261).

Almost surely, 2^{313023013100521} is an apocalyptic number.

It is an amenable number.

313023013100521 is a deficient number, since it is larger than the sum of its proper divisors (1).

313023013100521 is an equidigital number, since it uses as much as digits as its factorization.

313023013100521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 313023013100521 its reverse (125001310320313), we get a palindrome (438024323420834).

The spelling of 313023013100521 in words is "three hundred thirteen trillion, twenty-three billion, thirteen million, one hundred thousand, five hundred twenty-one".