392315317 has 2 divisors, whose sum is σ = 392315318. Its totient is φ = 392315316.

The previous prime is 392315311. The next prime is 392315389. The reversal of 392315317 is 713513293.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249608401 + 142706916 = 15799^2 + 11946^2 .

It is a cyclic number.

It is not a de Polignac number, because 392315317 - 2³ = 392315309 is a prime.

It is a super-2 number, since 2×392315317² = 307822615905620978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (392315311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196157658 + 196157659.

It is an arithmetic number, because the mean of its divisors is an integer number (196157659).

Almost surely, 2^392315317 is an apocalyptic number.

It is an amenable number.

392315317 is a deficient number, since it is larger than the sum of its proper divisors (1).

392315317 is an equidigital number, since it uses as much as digits as its factorization.

392315317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 34.

The square root of 392315317 is about 19806.9512293033. The cubic root of 392315317 is about 732.0573209265.

The spelling of 392315317 in words is "three hundred ninety-two million, three hundred fifteen thousand, three hundred seventeen".