2002023123 has 4 divisors (see below), whose sum is σ = 2669364168. Its totient is φ = 1334682080.

The previous prime is 2002023083. The next prime is 2002023137. The reversal of 2002023123 is 3213202002.

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 2002023123 - 2⁹ = 2002022611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2002023823) 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, 333670518 + ... + 333670523.

It is an arithmetic number, because the mean of its divisors is an integer number (667341042).

Almost surely, 2^2002023123 is an apocalyptic number.

2002023123 is a deficient number, since it is larger than the sum of its proper divisors (667341045).

2002023123 is an equidigital number, since it uses as much as digits as its factorization.

2002023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667341044.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2002023123 is about 44743.9730354827. The cubic root of 2002023123 is about 1260.3457359374.

Adding to 2002023123 its reverse (3213202002), we get a palindrome (5215225125).

The spelling of 2002023123 in words is "two billion, two million, twenty-three thousand, one hundred twenty-three".