2123133313 has 4 divisors (see below), whose sum is σ = 2426438080. Its totient is φ = 1819828548.

The previous prime is 2123133211. The next prime is 2123133361. The reversal of 2123133313 is 3133313212.

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 a de Polignac number, because none of the positive numbers 2^k-2123133313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123133373) 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, 151652373 + ... + 151652386.

It is an arithmetic number, because the mean of its divisors is an integer number (606609520).

Almost surely, 2^2123133313 is an apocalyptic number.

It is an amenable number.

2123133313 is a deficient number, since it is larger than the sum of its proper divisors (303304767).

2123133313 is an equidigital number, since it uses as much as digits as its factorization.

2123133313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303304766.

The product of its digits is 972, while the sum is 22.

The square root of 2123133313 is about 46077.4707747723. The cubic root of 2123133313 is about 1285.2642318746.

Adding to 2123133313 its reverse (3133313212), we get a palindrome (5256446525).

The spelling of 2123133313 in words is "two billion, one hundred twenty-three million, one hundred thirty-three thousand, three hundred thirteen".