2123323013 has 4 divisors (see below), whose sum is σ = 2426654880. Its totient is φ = 1819991148.

The previous prime is 2123322991. The next prime is 2123323019. The reversal of 2123323013 is 3103233212.

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 2123323013 - 2²⁰ = 2122274437 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 (2123323019) 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, 151665923 + ... + 151665936.

It is an arithmetic number, because the mean of its divisors is an integer number (606663720).

Almost surely, 2^2123323013 is an apocalyptic number.

It is an amenable number.

2123323013 is a deficient number, since it is larger than the sum of its proper divisors (303331867).

2123323013 is an equidigital number, since it uses as much as digits as its factorization.

2123323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303331866.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2123323013 is about 46079.5292185152. The cubic root of 2123323013 is about 1285.3025097918.

Adding to 2123323013 its reverse (3103233212), we get a palindrome (5226556225).

The spelling of 2123323013 in words is "two billion, one hundred twenty-three million, three hundred twenty-three thousand, thirteen".