231310319 has 2 divisors, whose sum is σ = 231310320. Its totient is φ = 231310318.

The previous prime is 231310297. The next prime is 231310327. The reversal of 231310319 is 913013132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231310319 - 2²⁰ = 230261743 is a prime.

It is a super-2 number, since 2×231310319² = 107008927351763522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231310294 and 231310303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231310349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655159 + 115655160.

It is an arithmetic number, because the mean of its divisors is an integer number (115655160).

Almost surely, 2^231310319 is an apocalyptic number.

231310319 is a deficient number, since it is larger than the sum of its proper divisors (1).

231310319 is an equidigital number, since it uses as much as digits as its factorization.

231310319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 231310319 is about 15208.8894729365. The cubic root of 231310319 is about 613.8538761440.

The spelling of 231310319 in words is "two hundred thirty-one million, three hundred ten thousand, three hundred nineteen".