315191494512 has 160 divisors (see below), whose sum is σ = 909071458560. Its totient is φ = 104559102720.

The previous prime is 315191494511. The next prime is 315191494531. The reversal of 315191494512 is 215494191513.

315191494512 is a `hidden beast` number, since 3 + 1 + 5 + 1 + 91 + 49 + 4 + 512 = 666.

It is a super-2 number, since 2×315191494512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315191494511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157831498 + ... + 157833494.

It is an arithmetic number, because the mean of its divisors is an integer number (5681696616).

Almost surely, 2^315191494512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315191494512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454535729280).

315191494512 is an abundant number, since it is smaller than the sum of its proper divisors (593879964048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315191494512 is a wasteful number, since it uses less digits than its factorization.

315191494512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588 (or 3576 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The spelling of 315191494512 in words is "three hundred fifteen billion, one hundred ninety-one million, four hundred ninety-four thousand, five hundred twelve".