317443145 has 4 divisors (see below), whose sum is σ = 380931780. Its totient is φ = 253954512.

The previous prime is 317443067. The next prime is 317443151. The reversal of 317443145 is 541344713.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227496889 + 89946256 = 15083^2 + 9484^2 .

It is a cyclic number.

It is not a de Polignac number, because 317443145 - 2¹⁰ = 317442121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31744310 + ... + 31744319.

It is an arithmetic number, because the mean of its divisors is an integer number (95232945).

Almost surely, 2^317443145 is an apocalyptic number.

It is an amenable number.

317443145 is a deficient number, since it is larger than the sum of its proper divisors (63488635).

317443145 is an equidigital number, since it uses as much as digits as its factorization.

317443145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63488634.

The product of its digits is 20160, while the sum is 32.

The square root of 317443145 is about 17816.9342200054. The cubic root of 317443145 is about 682.1637714671.

Adding to 317443145 its reverse (541344713), we get a palindrome (858787858).

The spelling of 317443145 in words is "three hundred seventeen million, four hundred forty-three thousand, one hundred forty-five".