315032431213 has 4 divisors (see below), whose sum is σ = 315077462140. Its totient is φ = 314987400288.

The previous prime is 315032431193. The next prime is 315032431229. The reversal of 315032431213 is 312134230513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86331367684 + 228701063529 = 293822^2 + 478227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315032431213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315032431243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22504968 + ... + 22518961.

It is an arithmetic number, because the mean of its divisors is an integer number (78769365535).

Almost surely, 2^315032431213 is an apocalyptic number.

It is an amenable number.

315032431213 is a deficient number, since it is larger than the sum of its proper divisors (45030927).

315032431213 is an equidigital number, since it uses as much as digits as its factorization.

315032431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45030926.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 315032431213 its reverse (312134230513), we get a palindrome (627166661726).

The spelling of 315032431213 in words is "three hundred fifteen billion, thirty-two million, four hundred thirty-one thousand, two hundred thirteen".