231421300 has 72 divisors (see below), whose sum is σ = 553527072. Its totient is φ = 83280000.

The previous prime is 231421259. The next prime is 231421301. The reversal of 231421300 is 3124132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231421301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110059 + ... + 112141.

It is an arithmetic number, because the mean of its divisors is an integer number (7687876).

Almost surely, 2^231421300 is an apocalyptic number.

231421300 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 231421300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276763536).

231421300 is an abundant number, since it is smaller than the sum of its proper divisors (322105772).

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

231421300 is a wasteful number, since it uses less digits than its factorization.

231421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231421300 is about 15212.5375923940. The cubic root of 231421300 is about 613.9520346478.

Adding to 231421300 its reverse (3124132), we get a palindrome (234545432).

It can be divided in two parts, 23142 and 1300, that added together give a palindrome (24442).

The spelling of 231421300 in words is "two hundred thirty-one million, four hundred twenty-one thousand, three hundred".