317902197 has 4 divisors (see below), whose sum is σ = 423869600. Its totient is φ = 211934796.

The previous prime is 317902183. The next prime is 317902199. The reversal of 317902197 is 791209713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 317902197 - 2⁴ = 317902181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317902199) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 52983697 + ... + 52983702.

It is an arithmetic number, because the mean of its divisors is an integer number (105967400).

Almost surely, 2^317902197 is an apocalyptic number.

It is an amenable number.

317902197 is a deficient number, since it is larger than the sum of its proper divisors (105967403).

317902197 is a wasteful number, since it uses less digits than its factorization.

317902197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105967402.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 317902197 is about 17829.8120292952. The cubic root of 317902197 is about 682.4924369541.

The spelling of 317902197 in words is "three hundred seventeen million, nine hundred two thousand, one hundred ninety-seven".