2113133123 has 4 divisors (see below), whose sum is σ = 2115785280. Its totient is φ = 2110480968.

The previous prime is 2113133101. The next prime is 2113133129. The reversal of 2113133123 is 3213313112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113133123 - 2⁸ = 2113132867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113133095 and 2113133104.

It is not an unprimeable number, because it can be changed into a prime (2113133129) 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, 1324883 + ... + 1326476.

It is an arithmetic number, because the mean of its divisors is an integer number (528946320).

Almost surely, 2^2113133123 is an apocalyptic number.

2113133123 is a deficient number, since it is larger than the sum of its proper divisors (2652157).

2113133123 is an equidigital number, since it uses as much as digits as its factorization.

2113133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652156.

The product of its digits is 324, while the sum is 20.

The square root of 2113133123 is about 45968.8277314095. The cubic root of 2113133123 is about 1283.2431436853.

Adding to 2113133123 its reverse (3213313112), we get a palindrome (5326446235).

The spelling of 2113133123 in words is "two billion, one hundred thirteen million, one hundred thirty-three thousand, one hundred twenty-three".