231404472 has 128 divisors (see below), whose sum is σ = 722534400. Its totient is φ = 68086656.

The previous prime is 231404447. The next prime is 231404479. The reversal of 231404472 is 274404132.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231404479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62793 + ... + 66375.

It is an arithmetic number, because the mean of its divisors is an integer number (5644800).

Almost surely, 2^231404472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231404472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361267200).

231404472 is an abundant number, since it is smaller than the sum of its proper divisors (491129928).

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

231404472 is a wasteful number, since it uses less digits than its factorization.

231404472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 231404472 is about 15211.9844859242. The cubic root of 231404472 is about 613.9371529360.

The spelling of 231404472 in words is "two hundred thirty-one million, four hundred four thousand, four hundred seventy-two".