317123436545 has 16 divisors (see below), whose sum is σ = 389366403840. Its totient is φ = 247884856704.

The previous prime is 317123436541. The next prime is 317123436557. The reversal of 317123436545 is 545634321713.

It is a cyclic number.

It is not a de Polignac number, because 317123436545 - 2² = 317123436541 is a prime.

It is a super-2 number, since 2×317123436545² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 317123436496 and 317123436505.

It is not an unprimeable number, because it can be changed into a prime (317123436541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4020905 + ... + 4099014.

It is an arithmetic number, because the mean of its divisors is an integer number (24335400240).

Almost surely, 2^317123436545 is an apocalyptic number.

It is an amenable number.

317123436545 is a deficient number, since it is larger than the sum of its proper divisors (72242967295).

317123436545 is a wasteful number, since it uses less digits than its factorization.

317123436545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8120104.

The product of its digits is 907200, while the sum is 44.

The spelling of 317123436545 in words is "three hundred seventeen billion, one hundred twenty-three million, four hundred thirty-six thousand, five hundred forty-five".