315253323312521 has 8 divisors (see below), whose sum is σ = 350401635517824. Its totient is φ = 281186497636720.

The previous prime is 315253323312463. The next prime is 315253323312533. The reversal of 315253323312521 is 125213323352513.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 315253323312521 - 2¹⁰ = 315253323311497 is a prime.

It is a super-2 number, since 2×315253323312521² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315253323312121) 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, 270371631761 + ... + 270371632926.

It is an arithmetic number, because the mean of its divisors is an integer number (43800204439728).

Almost surely, 2^{315253323312521} is an apocalyptic number.

It is an amenable number.

315253323312521 is a deficient number, since it is larger than the sum of its proper divisors (35148312205303).

315253323312521 is a wasteful number, since it uses less digits than its factorization.

315253323312521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540743264751.

The product of its digits is 486000, while the sum is 41.

The spelling of 315253323312521 in words is "three hundred fifteen trillion, two hundred fifty-three billion, three hundred twenty-three million, three hundred twelve thousand, five hundred twenty-one".