317157442919 has 2 divisors, whose sum is σ = 317157442920. Its totient is φ = 317157442918.

The previous prime is 317157442879. The next prime is 317157442939. The reversal of 317157442919 is 919244751713.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 317157442919 - 2⁸ = 317157442663 is a prime.

It is a super-2 number, since 2×317157442919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317157442939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158578721459 + 158578721460.

It is an arithmetic number, because the mean of its divisors is an integer number (158578721460).

Almost surely, 2^317157442919 is an apocalyptic number.

317157442919 is a deficient number, since it is larger than the sum of its proper divisors (1).

317157442919 is an equidigital number, since it uses as much as digits as its factorization.

317157442919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The spelling of 317157442919 in words is "three hundred seventeen billion, one hundred fifty-seven million, four hundred forty-two thousand, nine hundred nineteen".