317553046021 has 4 divisors (see below), whose sum is σ = 317557742944. Its totient is φ = 317548349100.

The previous prime is 317553046007. The next prime is 317553046033. The reversal of 317553046021 is 120640355713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 317553046021 - 2²⁹ = 317016175109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317553046001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245545 + ... + 2382766.

It is an arithmetic number, because the mean of its divisors is an integer number (79389435736).

Almost surely, 2^317553046021 is an apocalyptic number.

It is an amenable number.

317553046021 is a deficient number, since it is larger than the sum of its proper divisors (4696923).

317553046021 is an equidigital number, since it uses as much as digits as its factorization.

317553046021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696922.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 317553046021 in words is "three hundred seventeen billion, five hundred fifty-three million, forty-six thousand, twenty-one".