231244000 has 96 divisors (see below), whose sum is σ = 612009216. Its totient is φ = 85363200.

The previous prime is 231243997. The next prime is 231244007. The reversal of 231244000 is 442132.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231244007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49777 + ... + 54223.

It is an arithmetic number, because the mean of its divisors is an integer number (6375096).

Almost surely, 2^231244000 is an apocalyptic number.

231244000 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 231244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306004608).

231244000 is an abundant number, since it is smaller than the sum of its proper divisors (380765216).

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

231244000 is a wasteful number, since it uses less digits than its factorization.

231244000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 231244000 is about 15206.7090456811. The cubic root of 231244000 is about 613.7952045052.

Adding to 231244000 its reverse (442132), we get a palindrome (231686132).

The spelling of 231244000 in words is "two hundred thirty-one million, two hundred forty-four thousand".