317145238879 has 32 divisors (see below), whose sum is σ = 385481327616. Its totient is φ = 254710279680.

The previous prime is 317145238877. The next prime is 317145238951. The reversal of 317145238879 is 978832541713.

It is a cyclic number.

It is not a de Polignac number, because 317145238879 - 2¹ = 317145238877 is a prime.

It is a super-2 number, since 2×317145238879² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317145238877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77520624 + ... + 77524714.

It is an arithmetic number, because the mean of its divisors is an integer number (12046291488).

Almost surely, 2^317145238879 is an apocalyptic number.

317145238879 is a deficient number, since it is larger than the sum of its proper divisors (68336088737).

317145238879 is a wasteful number, since it uses less digits than its factorization.

317145238879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855.

The product of its digits is 10160640, while the sum is 58.

The spelling of 317145238879 in words is "three hundred seventeen billion, one hundred forty-five million, two hundred thirty-eight thousand, eight hundred seventy-nine".