231200222019989 has 4 divisors (see below), whose sum is σ = 231200287073580. Its totient is φ = 231200156966400.

The previous prime is 231200222019913. The next prime is 231200222019997. The reversal of 231200222019989 is 989910222002132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81657284019364 + 149542938000625 = 9036442^2 + 12228775^2 .

It is a cyclic number.

It is not a de Polignac number, because 231200222019989 - 2⁸ = 231200222019733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200222019089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26867594 + ... + 34413195.

It is an arithmetic number, because the mean of its divisors is an integer number (57800071768395).

Almost surely, 2^{231200222019989} is an apocalyptic number.

It is an amenable number.

231200222019989 is a deficient number, since it is larger than the sum of its proper divisors (65053591).

231200222019989 is an equidigital number, since it uses as much as digits as its factorization.

231200222019989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65053590.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 231200222019989 in words is "two hundred thirty-one trillion, two hundred billion, two hundred twenty-two million, nineteen thousand, nine hundred eighty-nine".