397318340365 has 16 divisors (see below), whose sum is σ = 478659567600. Its totient is φ = 316605284352.

The previous prime is 397318340333. The next prime is 397318340371. The reversal of 397318340365 is 563043813793.

It can be written as a sum of positive squares in 8 ways, for example, as 8365297444 + 388953042921 = 91462^2 + 623661^2 .

It is a cyclic number.

It is not a de Polignac number, because 397318340365 - 2⁵ = 397318340333 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1231941 + ... + 1520629.

It is an arithmetic number, because the mean of its divisors is an integer number (29916222975).

Almost surely, 2^397318340365 is an apocalyptic number.

It is an amenable number.

397318340365 is a deficient number, since it is larger than the sum of its proper divisors (81341227235).

397318340365 is a wasteful number, since it uses less digits than its factorization.

397318340365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289776.

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 397318340365 in words is "three hundred ninety-seven billion, three hundred eighteen million, three hundred forty thousand, three hundred sixty-five".