231322319 has 2 divisors, whose sum is σ = 231322320. Its totient is φ = 231322318.

The previous prime is 231322313. The next prime is 231322363. The reversal of 231322319 is 913223132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231322319 - 2¹² = 231318223 is a prime.

It is a super-2 number, since 2×231322319² = 107020030535075522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231322313) 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, 115661159 + 115661160.

It is an arithmetic number, because the mean of its divisors is an integer number (115661160).

Almost surely, 2^231322319 is an apocalyptic number.

231322319 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322319 is an equidigital number, since it uses as much as digits as its factorization.

231322319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 231322319 is about 15209.2839739417. The cubic root of 231322319 is about 613.8644912046.

The spelling of 231322319 in words is "two hundred thirty-one million, three hundred twenty-two thousand, three hundred nineteen".