2123442313 has 2 divisors, whose sum is σ = 2123442314. Its totient is φ = 2123442312.

The previous prime is 2123442301. The next prime is 2123442331. The reversal of 2123442313 is 3132443212.

Together with next prime (2123442331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1851753024 + 271689289 = 43032^2 + 16483^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123442313 - 2²⁹ = 1586571401 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123442353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061721156 + 1061721157.

It is an arithmetic number, because the mean of its divisors is an integer number (1061721157).

Almost surely, 2^2123442313 is an apocalyptic number.

It is an amenable number.

2123442313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123442313 is an equidigital number, since it uses as much as digits as its factorization.

2123442313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

The square root of 2123442313 is about 46080.8237014053. The cubic root of 2123442313 is about 1285.3265811361.

Adding to 2123442313 its reverse (3132443212), we get a palindrome (5255885525).

The spelling of 2123442313 in words is "two billion, one hundred twenty-three million, four hundred forty-two thousand, three hundred thirteen".