3115913 has 4 divisors (see below), whose sum is σ = 3299220. Its totient is φ = 2932608.

The previous prime is 3115907. The next prime is 3115919. The reversal of 3115913 is 3195113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3195113 = 1567 ⋅2039.

It is an interprime number because it is at equal distance from previous prime (3115907) and next prime (3115919).

It can be written as a sum of positive squares in 2 ways, for example, as 2550409 + 565504 = 1597^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115913 - 2⁴ = 3115897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3115919) 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, 91628 + ... + 91661.

It is an arithmetic number, because the mean of its divisors is an integer number (824805).

Almost surely, 2^3115913 is an apocalyptic number.

It is an amenable number.

3115913 is a deficient number, since it is larger than the sum of its proper divisors (183307).

3115913 is a wasteful number, since it uses less digits than its factorization.

3115913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183306.

The product of its digits is 405, while the sum is 23.

The square root of 3115913 is about 1765.1948900900. The cubic root of 3115913 is about 146.0590397364.

The spelling of 3115913 in words is "three million, one hundred fifteen thousand, nine hundred thirteen".