397318255 has 16 divisors (see below), whose sum is σ = 484606080. Its totient is φ = 312668928.

The previous prime is 397318219. The next prime is 397318279. The reversal of 397318255 is 552813793.

It is a cyclic number.

It is not a de Polignac number, because 397318255 - 2¹⁵ = 397285487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114019 + ... + 117451.

It is an arithmetic number, because the mean of its divisors is an integer number (30287880).

Almost surely, 2^397318255 is an apocalyptic number.

397318255 is a deficient number, since it is larger than the sum of its proper divisors (87287825).

397318255 is a wasteful number, since it uses less digits than its factorization.

397318255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810.

The product of its digits is 226800, while the sum is 43.

The square root of 397318255 is about 19932.8436255342. The cubic root of 397318255 is about 735.1560006386.

The spelling of 397318255 in words is "three hundred ninety-seven million, three hundred eighteen thousand, two hundred fifty-five".