2312813 has 4 divisors (see below), whose sum is σ = 2434560. Its totient is φ = 2191068.

The previous prime is 2312809. The next prime is 2312861. The reversal of 2312813 is 3182132.

2312813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 2312813 - 2² = 2312809 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 (2312873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60845 + ... + 60882.

It is an arithmetic number, because the mean of its divisors is an integer number (608640).

2^2312813 is an apocalyptic number.

It is an amenable number.

2312813 is a deficient number, since it is larger than the sum of its proper divisors (121747).

2312813 is a wasteful number, since it uses less digits than its factorization.

2312813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121746.

The product of its digits is 288, while the sum is 20.

The square root of 2312813 is about 1520.7935428585. The cubic root of 2312813 is about 132.2452778047.

Adding to 2312813 its reverse (3182132), we get a palindrome (5494945).

It can be divided in two parts, 2312 and 813, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2312813 in words is "two million, three hundred twelve thousand, eight hundred thirteen".