313401331 has 2 divisors, whose sum is σ = 313401332. Its totient is φ = 313401330.

The previous prime is 313401323. The next prime is 313401343. The reversal of 313401331 is 133104313.

It is a weak prime.

It is an emirp because it is prime and its reverse (133104313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313401331 - 2³ = 313401323 is a prime.

It is a super-2 number, since 2×313401331² = 196440788545143122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313401299 and 313401308.

It is not a weakly prime, because it can be changed into another prime (313401391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156700665 + 156700666.

It is an arithmetic number, because the mean of its divisors is an integer number (156700666).

Almost surely, 2^313401331 is an apocalyptic number.

313401331 is a deficient number, since it is larger than the sum of its proper divisors (1).

313401331 is an equidigital number, since it uses as much as digits as its factorization.

313401331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 313401331 is about 17703.1446641550. The cubic root of 313401331 is about 679.2562015642.

Adding to 313401331 its reverse (133104313), we get a palindrome (446505644).

The spelling of 313401331 in words is "three hundred thirteen million, four hundred one thousand, three hundred thirty-one".