2120303123 has 4 divisors (see below), whose sum is σ = 2122867800. Its totient is φ = 2117738448.

The previous prime is 2120303117. The next prime is 2120303131. The reversal of 2120303123 is 3213030212.

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 2120303123 - 2¹⁰ = 2120302099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120303113) 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, 1281098 + ... + 1282751.

It is an arithmetic number, because the mean of its divisors is an integer number (530716950).

Almost surely, 2^2120303123 is an apocalyptic number.

2120303123 is a deficient number, since it is larger than the sum of its proper divisors (2564677).

2120303123 is an equidigital number, since it uses as much as digits as its factorization.

2120303123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564676.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2120303123 is about 46046.7493206632. The cubic root of 2120303123 is about 1284.6928814301.

Adding to 2120303123 its reverse (3213030212), we get a palindrome (5333333335).

The spelling of 2120303123 in words is "two billion, one hundred twenty million, three hundred three thousand, one hundred twenty-three".