2312311213 has 4 divisors (see below), whose sum is σ = 2320482208. Its totient is φ = 2304140220.

The previous prime is 2312311207. The next prime is 2312311223. The reversal of 2312311213 is 3121132132.

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 2312311213 - 2⁵ = 2312311181 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 (2312311223) 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, 4085073 + ... + 4085638.

It is an arithmetic number, because the mean of its divisors is an integer number (580120552).

Almost surely, 2^2312311213 is an apocalyptic number.

It is an amenable number.

2312311213 is a deficient number, since it is larger than the sum of its proper divisors (8170995).

2312311213 is an equidigital number, since it uses as much as digits as its factorization.

2312311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170994.

The product of its digits is 216, while the sum is 19.

The square root of 2312311213 is about 48086.4972003576. The cubic root of 2312311213 is about 1322.3571315179.

Adding to 2312311213 its reverse (3121132132), we get a palindrome (5433443345).

The spelling of 2312311213 in words is "two billion, three hundred twelve million, three hundred eleven thousand, two hundred thirteen".