317157430 has 16 divisors (see below), whose sum is σ = 571144464. Its totient is φ = 126804960.

The previous prime is 317157343. The next prime is 317157437. The reversal of 317157430 is 34751713.

It is a junction number, because it is equal to n+sod(n) for n = 317157392 and 317157401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317157437) 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, 20920 + ... + 32740.

It is an arithmetic number, because the mean of its divisors is an integer number (35696529).

Almost surely, 2^317157430 is an apocalyptic number.

317157430 is a deficient number, since it is larger than the sum of its proper divisors (253987034).

317157430 is a wasteful number, since it uses less digits than its factorization.

317157430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14511.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 317157430 is about 17808.9143408575. The cubic root of 317157430 is about 681.9590493209.

The spelling of 317157430 in words is "three hundred seventeen million, one hundred fifty-seven thousand, four hundred thirty".