231031200 has 72 divisors (see below), whose sum is σ = 752014368. Its totient is φ = 61607680.

The previous prime is 231031181. The next prime is 231031201. The reversal of 231031200 is 2130132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (231031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45732 + ... + 50531.

It is an arithmetic number, because the mean of its divisors is an integer number (10444644).

Almost surely, 2^231031200 is an apocalyptic number.

231031200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231031200 is an abundant number, since it is smaller than the sum of its proper divisors (520983168).

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

231031200 is a wasteful number, since it uses less digits than its factorization.

231031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96286 (or 96273 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 231031200 is about 15199.7105235593. The cubic root of 231031200 is about 613.6068670695.

Adding to 231031200 its reverse (2130132), we get a palindrome (233161332).

The spelling of 231031200 in words is "two hundred thirty-one million, thirty-one thousand, two hundred".