313121284129 has 2 divisors, whose sum is σ = 313121284130. Its totient is φ = 313121284128.

The previous prime is 313121284097. The next prime is 313121284163. The reversal of 313121284129 is 921482121313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313107393600 + 13890529 = 559560^2 + 3727^2 .

It is a cyclic number.

It is not a de Polignac number, because 313121284129 - 2⁵ = 313121284097 is a prime.

It is not a weakly prime, because it can be changed into another prime (313121284199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156560642064 + 156560642065.

It is an arithmetic number, because the mean of its divisors is an integer number (156560642065).

Almost surely, 2^313121284129 is an apocalyptic number.

It is an amenable number.

313121284129 is a deficient number, since it is larger than the sum of its proper divisors (1).

313121284129 is an equidigital number, since it uses as much as digits as its factorization.

313121284129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The spelling of 313121284129 in words is "three hundred thirteen billion, one hundred twenty-one million, two hundred eighty-four thousand, one hundred twenty-nine".