317040155 has 4 divisors (see below), whose sum is σ = 380448192. Its totient is φ = 253632120.

The previous prime is 317040127. The next prime is 317040169. The reversal of 317040155 is 551040713.

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

It is not a de Polignac number, because 317040155 - 2¹² = 317036059 is a prime.

It is a Duffinian number.

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, 31704011 + ... + 31704020.

It is an arithmetic number, because the mean of its divisors is an integer number (95112048).

Almost surely, 2^317040155 is an apocalyptic number.

317040155 is a deficient number, since it is larger than the sum of its proper divisors (63408037).

317040155 is an equidigital number, since it uses as much as digits as its factorization.

317040155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63408036.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 317040155 is about 17805.6214438025. The cubic root of 317040155 is about 681.8749831762.

Adding to 317040155 its reverse (551040713), we get a palindrome (868080868).

The spelling of 317040155 in words is "three hundred seventeen million, forty thousand, one hundred fifty-five".