313231786361401 has 2 divisors, whose sum is σ = 313231786361402. Its totient is φ = 313231786361400.

The previous prime is 313231786361399. The next prime is 313231786361437. The reversal of 313231786361401 is 104163687132313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178379423727376 + 134852362634025 = 13355876^2 + 11612595^2 .

It is an emirp because it is prime and its reverse (104163687132313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313231786361401 - 2¹ = 313231786361399 is a prime.

It is a super-2 number, since 2×313231786361401² (a number of 30 digits) contains 22 as substring.

Together with 313231786361399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (313231786361701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156615893180700 + 156615893180701.

It is an arithmetic number, because the mean of its divisors is an integer number (156615893180701).

Almost surely, 2^{313231786361401} is an apocalyptic number.

It is an amenable number.

313231786361401 is a deficient number, since it is larger than the sum of its proper divisors (1).

313231786361401 is an equidigital number, since it uses as much as digits as its factorization.

313231786361401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 313231786361401 in words is "three hundred thirteen trillion, two hundred thirty-one billion, seven hundred eighty-six million, three hundred sixty-one thousand, four hundred one".