2131200023 has 4 divisors (see below), whose sum is σ = 2131337400. Its totient is φ = 2131062648.

The previous prime is 2131200011. The next prime is 2131200103. The reversal of 2131200023 is 3200021312.

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 2131200023 - 2²⁰ = 2130151447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131199980 and 2131200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131260023) 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, 41948 + ... + 77601.

It is an arithmetic number, because the mean of its divisors is an integer number (532834350).

Almost surely, 2^2131200023 is an apocalyptic number.

2131200023 is a deficient number, since it is larger than the sum of its proper divisors (137377).

2131200023 is a wasteful number, since it uses less digits than its factorization.

2131200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137376.

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

The square root of 2131200023 is about 46164.9219971181. The cubic root of 2131200023 is about 1286.8899345954.

Adding to 2131200023 its reverse (3200021312), we get a palindrome (5331221335).

The spelling of 2131200023 in words is "two billion, one hundred thirty-one million, two hundred thousand, twenty-three".