317145989 has 8 divisors (see below), whose sum is σ = 324355968. Its totient is φ = 309955360.

The previous prime is 317145979. The next prime is 317146007. The reversal of 317145989 is 989541713.

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 317145989 - 2²⁴ = 300368773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317145949) 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, 31334 + ... + 40200.

It is an arithmetic number, because the mean of its divisors is an integer number (40544496).

Almost surely, 2^317145989 is an apocalyptic number.

It is an amenable number.

317145989 is a deficient number, since it is larger than the sum of its proper divisors (7209979).

317145989 is an equidigital number, since it uses as much as digits as its factorization.

317145989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675.

The product of its digits is 272160, while the sum is 47.

The square root of 317145989 is about 17808.5931224227. The cubic root of 317145989 is about 681.9508489903.

The spelling of 317145989 in words is "three hundred seventeen million, one hundred forty-five thousand, nine hundred eighty-nine".