231321042200 has 48 divisors (see below), whose sum is σ = 545188874280. Its totient is φ = 91260898560.

The previous prime is 231321042163. The next prime is 231321042209. The reversal of 231321042200 is 2240123132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321042209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7907354 + ... + 7936553.

Almost surely, 2^231321042200 is an apocalyptic number.

231321042200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231321042200 is an abundant number, since it is smaller than the sum of its proper divisors (313867832080).

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

231321042200 is a wasteful number, since it uses less digits than its factorization.

231321042200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15843996 (or 15843987 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231321042200 its reverse (2240123132), we get a palindrome (233561165332).

The spelling of 231321042200 in words is "two hundred thirty-one billion, three hundred twenty-one million, forty-two thousand, two hundred".