315221244345 has 48 divisors (see below), whose sum is σ = 635022011520. Its totient is φ = 141658739712.

The previous prime is 315221244323. The next prime is 315221244391. The reversal of 315221244345 is 543442122513.

It is a happy number.

315221244345 is a `hidden beast` number, since 3 + 1 + 5 + 2 + 212 + 4 + 434 + 5 = 666.

It is not a de Polignac number, because 315221244345 - 2⁵ = 315221244313 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8461944 + ... + 8499113.

It is an arithmetic number, because the mean of its divisors is an integer number (13229625240).

Almost surely, 2^315221244345 is an apocalyptic number.

315221244345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315221244345 is an abundant number, since it is smaller than the sum of its proper divisors (319800767175).

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

315221244345 is a wasteful number, since it uses less digits than its factorization.

315221244345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16961134 (or 16961131 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 315221244345 its reverse (543442122513), we get a palindrome (858663366858).

The spelling of 315221244345 in words is "three hundred fifteen billion, two hundred twenty-one million, two hundred forty-four thousand, three hundred forty-five".