231405200 has 60 divisors (see below), whose sum is σ = 598729908. Its totient is φ = 85440000.

The previous prime is 231405179. The next prime is 231405211. The reversal of 231405200 is 2504132.

It can be written as a sum of positive squares in 6 ways, for example, as 18011536 + 213393664 = 4244^2 + 14608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17051 + ... + 27450.

Almost surely, 2^231405200 is an apocalyptic number.

231405200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231405200 is an abundant number, since it is smaller than the sum of its proper divisors (367324708).

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

231405200 is a wasteful number, since it uses less digits than its factorization.

231405200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44532 (or 44521 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231405200 is about 15212.0084144073. The cubic root of 231405200 is about 613.9377967521.

Adding to 231405200 its reverse (2504132), we get a palindrome (233909332).

The spelling of 231405200 in words is "two hundred thirty-one million, four hundred five thousand, two hundred".