315112124213 has 4 divisors (see below), whose sum is σ = 315195912108. Its totient is φ = 315028336320.

The previous prime is 315112124209. The next prime is 315112124267. The reversal of 315112124213 is 312421211513.

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 260628628324 + 54483495889 = 510518^2 + 233417^2 .

It is a cyclic number.

It is not a de Polignac number, because 315112124213 - 2² = 315112124209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315112124203) 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, 41888306 + ... + 41895827.

It is an arithmetic number, because the mean of its divisors is an integer number (78798978027).

Almost surely, 2^315112124213 is an apocalyptic number.

It is an amenable number.

315112124213 is a deficient number, since it is larger than the sum of its proper divisors (83787895).

315112124213 is an equidigital number, since it uses as much as digits as its factorization.

315112124213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83787894.

The product of its digits is 1440, while the sum is 26.

Adding to 315112124213 its reverse (312421211513), we get a palindrome (627533335726).

The spelling of 315112124213 in words is "three hundred fifteen billion, one hundred twelve million, one hundred twenty-four thousand, two hundred thirteen".