317989430 has 16 divisors (see below), whose sum is σ = 624415824. Its totient is φ = 115632480.

The previous prime is 317989411. The next prime is 317989439. The reversal of 317989430 is 34989713.

It is a happy number.

It is a super-2 number, since 2×317989430² = 202234555183449800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317989439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445297 + ... + 1445516.

It is an arithmetic number, because the mean of its divisors is an integer number (39025989).

Almost surely, 2^317989430 is an apocalyptic number.

317989430 is a deficient number, since it is larger than the sum of its proper divisors (306426394).

317989430 is a wasteful number, since it uses less digits than its factorization.

317989430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890831.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 317989430 is about 17832.2581295808. The cubic root of 317989430 is about 682.5548570093.

The spelling of 317989430 in words is "three hundred seventeen million, nine hundred eighty-nine thousand, four hundred thirty".