315342321331 has 2 divisors, whose sum is σ = 315342321332. Its totient is φ = 315342321330.

The previous prime is 315342321293. The next prime is 315342321341. The reversal of 315342321331 is 133123243513.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315342321331 - 2⁹ = 315342320819 is a prime.

It is a super-2 number, since 2×315342321331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315342321293 and 315342321302.

It is not a weakly prime, because it can be changed into another prime (315342321341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157671160665 + 157671160666.

It is an arithmetic number, because the mean of its divisors is an integer number (157671160666).

Almost surely, 2^315342321331 is an apocalyptic number.

315342321331 is a deficient number, since it is larger than the sum of its proper divisors (1).

315342321331 is an equidigital number, since it uses as much as digits as its factorization.

315342321331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

Adding to 315342321331 its reverse (133123243513), we get a palindrome (448465564844).

The spelling of 315342321331 in words is "three hundred fifteen billion, three hundred forty-two million, three hundred twenty-one thousand, three hundred thirty-one".