200423131243 has 4 divisors (see below), whose sum is σ = 202837867848. Its totient is φ = 198008394640.

The previous prime is 200423131231. The next prime is 200423131247. The reversal of 200423131243 is 342131324002.

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 200423131243 - 2⁵ = 200423131211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200423131247) 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, 1207368178 + ... + 1207368343.

It is an arithmetic number, because the mean of its divisors is an integer number (50709466962).

Almost surely, 2^200423131243 is an apocalyptic number.

200423131243 is a deficient number, since it is larger than the sum of its proper divisors (2414736605).

200423131243 is an equidigital number, since it uses as much as digits as its factorization.

200423131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414736604.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 200423131243 its reverse (342131324002), we get a palindrome (542554455245).

The spelling of 200423131243 in words is "two hundred billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred forty-three".