315143210321 has 8 divisors (see below), whose sum is σ = 316127754624. Its totient is φ = 314158862160.

The previous prime is 315143210309. The next prime is 315143210401. The reversal of 315143210321 is 123012341513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315143210321 is a prime.

It is a super-2 number, since 2×315143210321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315143210021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3588680 + ... + 3675446.

It is an arithmetic number, because the mean of its divisors is an integer number (39515969328).

Almost surely, 2^315143210321 is an apocalyptic number.

It is an amenable number.

315143210321 is a deficient number, since it is larger than the sum of its proper divisors (984544303).

315143210321 is a wasteful number, since it uses less digits than its factorization.

315143210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98071.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 315143210321 its reverse (123012341513), we get a palindrome (438155551834).

The spelling of 315143210321 in words is "three hundred fifteen billion, one hundred forty-three million, two hundred ten thousand, three hundred twenty-one".