315031145305 has 32 divisors (see below), whose sum is σ = 404598211200. Its totient is φ = 234764697600.

The previous prime is 315031145287. The next prime is 315031145309. The reversal of 315031145305 is 503541130513.

It is not a de Polignac number, because 315031145305 - 2⁹ = 315031144793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315031145309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20500825 + ... + 20516185.

It is an arithmetic number, because the mean of its divisors is an integer number (12643694100).

Almost surely, 2^315031145305 is an apocalyptic number.

It is an amenable number.

315031145305 is a deficient number, since it is larger than the sum of its proper divisors (89567065895).

315031145305 is a wasteful number, since it uses less digits than its factorization.

315031145305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18985.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 315031145305 its reverse (503541130513), we get a palindrome (818572275818).

The spelling of 315031145305 in words is "three hundred fifteen billion, thirty-one million, one hundred forty-five thousand, three hundred five".