313225268621 has 2 divisors, whose sum is σ = 313225268622. Its totient is φ = 313225268620.

The previous prime is 313225268579. The next prime is 313225268627. The reversal of 313225268621 is 126862522313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278297396521 + 34927872100 = 527539^2 + 186890^2 .

It is a cyclic number.

It is not a de Polignac number, because 313225268621 - 2⁶ = 313225268557 is a prime.

It is a super-2 number, since 2×313225268621² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313225268627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156612634310 + 156612634311.

It is an arithmetic number, because the mean of its divisors is an integer number (156612634311).

Almost surely, 2^313225268621 is an apocalyptic number.

It is an amenable number.

313225268621 is a deficient number, since it is larger than the sum of its proper divisors (1).

313225268621 is an equidigital number, since it uses as much as digits as its factorization.

313225268621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The spelling of 313225268621 in words is "three hundred thirteen billion, two hundred twenty-five million, two hundred sixty-eight thousand, six hundred twenty-one".