231100200 has 72 divisors (see below), whose sum is σ = 776117550. Its totient is φ = 61626240.

The previous prime is 231100171. The next prime is 231100213. The reversal of 231100200 is 2001132.

It is a happy number.

231100200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 223382916 + 7717284 = 14946^2 + 2778^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 62395 + ... + 65994.

Almost surely, 2^231100200 is an apocalyptic number.

231100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231100200 is an abundant number, since it is smaller than the sum of its proper divisors (545017350).

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

231100200 is a wasteful number, since it uses less digits than its factorization.

231100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128411 (or 128399 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 231100200 is about 15201.9801341799. The cubic root of 231100200 is about 613.6679477944.

Adding to 231100200 its reverse (2001132), we get a palindrome (233101332).

The spelling of 231100200 in words is "two hundred thirty-one million, one hundred thousand, two hundred".