231213300 has 72 divisors (see below), whose sum is σ = 670790400. Its totient is φ = 61489920.

The previous prime is 231213247. The next prime is 231213361. The reversal of 231213300 is 3312132.

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 231213300.

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, 142896 + ... + 144504.

Almost surely, 2^231213300 is an apocalyptic number.

231213300 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 231213300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335395200).

231213300 is an abundant number, since it is smaller than the sum of its proper divisors (439577100).

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

231213300 is a wasteful number, since it uses less digits than its factorization.

231213300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 231213300 is about 15205.6995892987. The cubic root of 231213300 is about 613.7680407781.

Adding to 231213300 its reverse (3312132), we get a palindrome (234525432).

It can be divided in two parts, 231 and 213300, that added together give a triangular number (213531 = T₆₅₃).

The spelling of 231213300 in words is "two hundred thirty-one million, two hundred thirteen thousand, three hundred".