231200312 has 64 divisors (see below), whose sum is σ = 513051840. Its totient is φ = 95616000.

The previous prime is 231200287. The next prime is 231200327. The reversal of 231200312 is 213002132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231398 + ... + 232394.

It is an arithmetic number, because the mean of its divisors is an integer number (8016435).

Almost surely, 2^231200312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231200312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256525920).

231200312 is an abundant number, since it is smaller than the sum of its proper divisors (281851528).

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

231200312 is a wasteful number, since it uses less digits than its factorization.

231200312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231200312 is about 15205.2725066011. The cubic root of 231200312 is about 613.7565481166.

Adding to 231200312 its reverse (213002132), we get a palindrome (444202444).

The spelling of 231200312 in words is "two hundred thirty-one million, two hundred thousand, three hundred twelve".