231211200 has 336 divisors, whose sum is σ = 861730560. Its totient is φ = 53760000.

The previous prime is 231211193. The next prime is 231211219. The reversal of 231211200 is 2112132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1531125 + ... + 1531275.

Almost surely, 2^231211200 is an apocalyptic number.

231211200 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 231211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430865280).

231211200 is an abundant number, since it is smaller than the sum of its proper divisors (630519360).

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

231211200 is a wasteful number, since it uses less digits than its factorization.

231211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 231211200 is about 15205.6305360876. The cubic root of 231211200 is about 613.7661825851.

Adding to 231211200 its reverse (2112132), we get a palindrome (233323332).

The spelling of 231211200 in words is "two hundred thirty-one million, two hundred eleven thousand, two hundred".