2000123231 has 4 divisors (see below), whose sum is σ = 2001303552. Its totient is φ = 1998942912.

The previous prime is 2000123221. The next prime is 2000123239. The reversal of 2000123231 is 1323210002.

It is a happy number.

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 2000123231 - 2²² = 1995928927 is a prime.

It is a super-2 number, since 2×2000123231² = 8000985878371758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000123239) 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, 587615 + ... + 591008.

It is an arithmetic number, because the mean of its divisors is an integer number (500325888).

Almost surely, 2^2000123231 is an apocalyptic number.

2000123231 is a deficient number, since it is larger than the sum of its proper divisors (1180321).

2000123231 is a wasteful number, since it uses less digits than its factorization.

2000123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180320.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2000123231 is about 44722.7372932382. The cubic root of 2000123231 is about 1259.9469262519.

Adding to 2000123231 its reverse (1323210002), we get a palindrome (3323333233).

The spelling of 2000123231 in words is "two billion, one hundred twenty-three thousand, two hundred thirty-one".