231115200 has 168 divisors, whose sum is σ = 768187440. Its totient is φ = 60825600.

The previous prime is 231115189. The next prime is 231115219. The reversal of 231115200 is 2511132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231115200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 426930 + ... + 427470.

Almost surely, 2^231115200 is an apocalyptic number.

231115200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231115200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384093720).

231115200 is an abundant number, since it is smaller than the sum of its proper divisors (537072240).

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

231115200 is a wasteful number, since it uses less digits than its factorization.

231115200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 231115200 is about 15202.4734829566. The cubic root of 231115200 is about 613.6812246041.

Adding to 231115200 its reverse (2511132), we get a palindrome (233626332).

The spelling of 231115200 in words is "two hundred thirty-one million, one hundred fifteen thousand, two hundred".