3115513 has 4 divisors (see below), whose sum is σ = 3119220. Its totient is φ = 3111808.

The previous prime is 3115493. The next prime is 3115529. The reversal of 3115513 is 3155113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2832489 + 283024 = 1683^2 + 532^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115513 - 2⁵ = 3115481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3115813) 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, 81 + ... + 2497.

It is an arithmetic number, because the mean of its divisors is an integer number (779805).

Almost surely, 2^3115513 is an apocalyptic number.

It is an amenable number.

3115513 is a deficient number, since it is larger than the sum of its proper divisors (3707).

3115513 is a wasteful number, since it uses less digits than its factorization.

3115513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706.

The product of its digits is 225, while the sum is 19.

The square root of 3115513 is about 1765.0815845167. The cubic root of 3115513 is about 146.0527894425.

The spelling of 3115513 in words is "three million, one hundred fifteen thousand, five hundred thirteen".