2002311123 has 4 divisors (see below), whose sum is σ = 2669748168. Its totient is φ = 1334874080.

The previous prime is 2002311121. The next prime is 2002311167. The reversal of 2002311123 is 3211132002.

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 2002311123 - 2¹ = 2002311121 is a prime.

It is a super-2 number, since 2×2002311123² = 8018499666579042258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2002311121) 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, 333718518 + ... + 333718523.

It is an arithmetic number, because the mean of its divisors is an integer number (667437042).

Almost surely, 2^2002311123 is an apocalyptic number.

2002311123 is a deficient number, since it is larger than the sum of its proper divisors (667437045).

2002311123 is an equidigital number, since it uses as much as digits as its factorization.

2002311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667437044.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2002311123 is about 44747.1912302884. The cubic root of 2002311123 is about 1260.4061685008.

Adding to 2002311123 its reverse (3211132002), we get a palindrome (5213443125).

The spelling of 2002311123 in words is "two billion, two million, three hundred eleven thousand, one hundred twenty-three".