317423131 has 2 divisors, whose sum is σ = 317423132. Its totient is φ = 317423130.

The previous prime is 317423081. The next prime is 317423137. The reversal of 317423131 is 131324713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317423131 is a prime.

It is a super-2 number, since 2×317423131² = 201514888187686322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 317423096 and 317423105.

It is not a weakly prime, because it can be changed into another prime (317423137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158711565 + 158711566.

It is an arithmetic number, because the mean of its divisors is an integer number (158711566).

Almost surely, 2^317423131 is an apocalyptic number.

317423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

317423131 is an equidigital number, since it uses as much as digits as its factorization.

317423131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 317423131 is about 17816.3725544792. The cubic root of 317423131 is about 682.1494349233.

Adding to 317423131 its reverse (131324713), we get a palindrome (448747844).

The spelling of 317423131 in words is "three hundred seventeen million, four hundred twenty-three thousand, one hundred thirty-one".