315606613 has 4 divisors (see below), whose sum is σ = 360693280. Its totient is φ = 270519948.

The previous prime is 315606607. The next prime is 315606689. The reversal of 315606613 is 316606513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316606513 = 449 ⋅705137.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315606613 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 (315606013) 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, 22543323 + ... + 22543336.

It is an arithmetic number, because the mean of its divisors is an integer number (90173320).

Almost surely, 2^315606613 is an apocalyptic number.

It is an amenable number.

315606613 is a deficient number, since it is larger than the sum of its proper divisors (45086667).

315606613 is an equidigital number, since it uses as much as digits as its factorization.

315606613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45086666.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 315606613 is about 17765.3205149809. The cubic root of 315606613 is about 680.8456987990.

The spelling of 315606613 in words is "three hundred fifteen million, six hundred six thousand, six hundred thirteen".