315214345521 has 12 divisors (see below), whose sum is σ = 456244543872. Its totient is φ = 209711389176.

The previous prime is 315214345519. The next prime is 315214345571. The reversal of 315214345521 is 125543412513.

315214345521 is a `hidden beast` number, since 3 + 1 + 52 + 1 + 43 + 45 + 521 = 666.

It is not a de Polignac number, because 315214345521 - 2¹ = 315214345519 is a prime.

It is a super-2 number, since 2×315214345521² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315214345571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35954361 + ... + 35963126.

It is an arithmetic number, because the mean of its divisors is an integer number (38020378656).

Almost surely, 2^315214345521 is an apocalyptic number.

It is an amenable number.

315214345521 is a deficient number, since it is larger than the sum of its proper divisors (141030198351).

315214345521 is a wasteful number, since it uses less digits than its factorization.

315214345521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71917980 (or 71917977 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 315214345521 in words is "three hundred fifteen billion, two hundred fourteen million, three hundred forty-five thousand, five hundred twenty-one".