231200646 has 64 divisors (see below), whose sum is σ = 515289600. Its totient is φ = 68783616.

The previous prime is 231200621. The next prime is 231200647. The reversal of 231200646 is 646002132.

231200646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325740 + ... + 326448.

It is an arithmetic number, because the mean of its divisors is an integer number (8051400).

Almost surely, 2^231200646 is an apocalyptic number.

231200646 is an abundant number, since it is smaller than the sum of its proper divisors (284088954).

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

231200646 is a wasteful number, since it uses less digits than its factorization.

231200646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231200646 is about 15205.2834896295. The cubic root of 231200646 is about 613.7568436678.

Adding to 231200646 its reverse (646002132), we get a palindrome (877202778).

The spelling of 231200646 in words is "two hundred thirty-one million, two hundred thousand, six hundred forty-six".