317523421 has 8 divisors (see below), whose sum is σ = 345017600. Its totient is φ = 291107520.

The previous prime is 317523403. The next prime is 317523439. The reversal of 317523421 is 124325713.

It is an interprime number because it is at equal distance from previous prime (317523403) and next prime (317523439).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317523421 - 2²⁵ = 283968989 is a prime.

It is a super-2 number, since 2×317523421² = 201642245767086482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 317523421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317523461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268956 + ... + 270133.

It is an arithmetic number, because the mean of its divisors is an integer number (43127200).

Almost surely, 2^317523421 is an apocalyptic number.

317523421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

317523421 is a deficient number, since it is larger than the sum of its proper divisors (27494179).

317523421 is a wasteful number, since it uses less digits than its factorization.

317523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539139.

The product of its digits is 5040, while the sum is 28.

The square root of 317523421 is about 17819.1868781940. The cubic root of 317523421 is about 682.2212691790.

The spelling of 317523421 in words is "three hundred seventeen million, five hundred twenty-three thousand, four hundred twenty-one".