3112513 has 4 divisors (see below), whose sum is σ = 3295620. Its totient is φ = 2929408.

The previous prime is 3112507. The next prime is 3112519. The reversal of 3112513 is 3152113.

3112513 = 1247² + 1248².

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

It is an interprime number because it is at equal distance from previous prime (3112507) and next prime (3112519).

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 1555009 = 1248^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 3112513 - 2²¹ = 1015361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3112519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91528 + ... + 91561.

It is an arithmetic number, because the mean of its divisors is an integer number (823905).

Almost surely, 2^3112513 is an apocalyptic number.

3112513 is the 1248-th centered square number.

It is an amenable number.

3112513 is a deficient number, since it is larger than the sum of its proper divisors (183107).

3112513 is a wasteful number, since it uses less digits than its factorization.

3112513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183106.

The product of its digits is 90, while the sum is 16.

The square root of 3112513 is about 1764.2315607652. The cubic root of 3112513 is about 146.0058951770.

Adding to 3112513 its reverse (3152113), we get a palindrome (6264626).

It can be divided in two parts, 31 and 12513, that added together give a square (12544 = 112²).

The spelling of 3112513 in words is "three million, one hundred twelve thousand, five hundred thirteen".