231244104 has 128 divisors (see below), whose sum is σ = 718583040. Its totient is φ = 60383232.

The previous prime is 231244103. The next prime is 231244121. The reversal of 231244104 is 401442132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (231244103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246324 + ... + 247260.

It is an arithmetic number, because the mean of its divisors is an integer number (5613930).

Almost surely, 2^231244104 is an apocalyptic number.

231244104 is a gapful number since it is divisible by the number (24) 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 231244104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359291520).

231244104 is an abundant number, since it is smaller than the sum of its proper divisors (487338936).

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

231244104 is a wasteful number, since it uses less digits than its factorization.

231244104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 231244104 is about 15206.7124652240. The cubic root of 231244104 is about 613.7952965215.

Adding to 231244104 its reverse (401442132), we get a palindrome (632686236).

The spelling of 231244104 in words is "two hundred thirty-one million, two hundred forty-four thousand, one hundred four".