231223123200 has 432 divisors, whose sum is σ = 788805763200. Its totient is φ = 59603189760.

The previous prime is 231223123169. The next prime is 231223123207. The reversal of 231223123200 is 2321322132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223123207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118635826 + ... + 118637774.

Almost surely, 2^231223123200 is an apocalyptic number.

231223123200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231223123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394402881600).

231223123200 is an abundant number, since it is smaller than the sum of its proper divisors (557582640000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231223123200 is a wasteful number, since it uses less digits than its factorization.

231223123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231223123200 its reverse (2321322132), we get a palindrome (233544445332).

The spelling of 231223123200 in words is "two hundred thirty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, two hundred".