231200123 has 8 divisors (see below), whose sum is σ = 288249600. Its totient is φ = 180155880.

The previous prime is 231200089. The next prime is 231200129. The reversal of 231200123 is 321002132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231200123 - 2⁸ = 231199867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231200098 and 231200107.

It is not an unprimeable number, because it can be changed into a prime (231200129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501223 + ... + 1501376.

It is an arithmetic number, because the mean of its divisors is an integer number (36031200).

Almost surely, 2^231200123 is an apocalyptic number.

231200123 is a deficient number, since it is larger than the sum of its proper divisors (57049477).

231200123 is a wasteful number, since it uses less digits than its factorization.

231200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002617.

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

The square root of 231200123 is about 15205.2662916504. The cubic root of 231200123 is about 613.7563808734.

Adding to 231200123 its reverse (321002132), we get a palindrome (552202255).

The spelling of 231200123 in words is "two hundred thirty-one million, two hundred thousand, one hundred twenty-three".