864313319 has 2 divisors, whose sum is σ = 864313320. Its totient is φ = 864313318.

The previous prime is 864313313. The next prime is 864313321. The reversal of 864313319 is 913313468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864313319 is a prime.

It is a super-2 number, since 2×864313319² = 1494075026801591522, which contains 22 as substring.

Together with 864313321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864313313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432156659 + 432156660.

It is an arithmetic number, because the mean of its divisors is an integer number (432156660).

Almost surely, 2^864313319 is an apocalyptic number.

864313319 is a deficient number, since it is larger than the sum of its proper divisors (1).

864313319 is an equidigital number, since it uses as much as digits as its factorization.

864313319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 864313319 is about 29399.2060947230. The cubic root of 864313319 is about 952.5557475701. Note that the first 3 decimals are identical.

The spelling of 864313319 in words is "eight hundred sixty-four million, three hundred thirteen thousand, three hundred nineteen".