2312122013 has 4 divisors (see below), whose sum is σ = 2316396348. Its totient is φ = 2307847680.

The previous prime is 2312122003. The next prime is 2312122037. The reversal of 2312122013 is 3102212132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 578065849 + 1734056164 = 24043^2 + 41642^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312122013 - 2²⁰ = 2311073437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312121982 and 2312122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312122003) 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, 2136356 + ... + 2137437.

It is an arithmetic number, because the mean of its divisors is an integer number (579099087).

Almost surely, 2^2312122013 is an apocalyptic number.

It is an amenable number.

2312122013 is a deficient number, since it is larger than the sum of its proper divisors (4274335).

2312122013 is an equidigital number, since it uses as much as digits as its factorization.

2312122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274334.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2312122013 is about 48084.5298718829. The cubic root of 2312122013 is about 1322.3210641708.

Adding to 2312122013 its reverse (3102212132), we get a palindrome (5414334145).

The spelling of 2312122013 in words is "two billion, three hundred twelve million, one hundred twenty-two thousand, thirteen".