317431 has 2 divisors, whose sum is σ = 317432.
Its totient is φ = 317430.
The previous prime is 317419. The next prime is 317437. The reversal of 317431 is 134713.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 317431 - 25 = 317399 is a prime.
It is a super-2 number, since 2×3174312 = 201524879522, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 317399 and 317408.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (317437) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158715 + 158716.
It is an arithmetic number, because the mean of its divisors is an integer number (158716).
2317431 is an apocalyptic number.
317431 is a deficient number, since it is larger than the sum of its proper divisors (1).
317431 is an equidigital number, since it uses as much as digits as its factorization.
317431 is an evil number, because the sum of its binary digits is even.
The product of its digits is 252, while the sum is 19.
The square root of 317431 is about 563.4101525532.
The cubic root of 317431 is about 68.2155071763.
The spelling of 317431 in words is "three hundred seventeen thousand, four hundred thirty-one".