313707768251 has 2 divisors, whose sum is σ = 313707768252. Its totient is φ = 313707768250.

The previous prime is 313707768197. The next prime is 313707768259. The reversal of 313707768251 is 152867707313.

It is a strong prime.

It is an emirp because it is prime and its reverse (152867707313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313707768251 - 2²² = 313703573947 is a prime.

It is a super-2 number, since 2×313707768251² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 313707768251.

It is not a weakly prime, because it can be changed into another prime (313707768259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156853884125 + 156853884126.

It is an arithmetic number, because the mean of its divisors is an integer number (156853884126).

Almost surely, 2^313707768251 is an apocalyptic number.

313707768251 is a deficient number, since it is larger than the sum of its proper divisors (1).

313707768251 is an equidigital number, since it uses as much as digits as its factorization.

313707768251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 313707768251 in words is "three hundred thirteen billion, seven hundred seven million, seven hundred sixty-eight thousand, two hundred fifty-one".