318680039 has 2 divisors, whose sum is σ = 318680040. Its totient is φ = 318680038.

The previous prime is 318680029. The next prime is 318680041. The reversal of 318680039 is 930086813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318680039 - 2⁴ = 318680023 is a prime.

Together with 318680041, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_17207894 and since 318680039 and 17207894 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 318679984 and 318680011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318680029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159340019 + 159340020.

It is an arithmetic number, because the mean of its divisors is an integer number (159340020).

Almost surely, 2^318680039 is an apocalyptic number.

318680039 is a deficient number, since it is larger than the sum of its proper divisors (1).

318680039 is an equidigital number, since it uses as much as digits as its factorization.

318680039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 318680039 is about 17851.6116639367. The cubic root of 318680039 is about 683.0486236228.

The spelling of 318680039 in words is "three hundred eighteen million, six hundred eighty thousand, thirty-nine".