2321312013 has 10 divisors (see below), whose sum is σ = 3467639054. Its totient is φ = 1547541288.

The previous prime is 2321312011. The next prime is 2321312027. The reversal of 2321312013 is 3102131232.

It can be written as a sum of positive squares in only one way, i.e., 1541897289 + 779414724 = 39267^2 + 27918^2 .

It is not a de Polignac number, because 2321312013 - 2¹ = 2321312011 is a prime.

It is a super-2 number, since 2×2321312013² = 10776978923396224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321312011) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14329006 + ... + 14329167.

Almost surely, 2^2321312013 is an apocalyptic number.

It is an amenable number.

2321312013 is a deficient number, since it is larger than the sum of its proper divisors (1146327041).

2321312013 is an equidigital number, since it uses as much as digits as its factorization.

2321312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28658185 (or 28658176 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2321312013 is about 48179.9959838105. The cubic root of 2321312013 is about 1324.0706929529.

Adding to 2321312013 its reverse (3102131232), we get a palindrome (5423443245).

The spelling of 2321312013 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, thirteen".