231144456 has 16 divisors (see below), whose sum is σ = 577861200. Its totient is φ = 77048144.

The previous prime is 231144451. The next prime is 231144467. The reversal of 231144456 is 654441132.

231144456 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231144451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4815486 + ... + 4815533.

It is an arithmetic number, because the mean of its divisors is an integer number (36116325).

Almost surely, 2^231144456 is an apocalyptic number.

It is an amenable number.

231144456 is an abundant number, since it is smaller than the sum of its proper divisors (346716744).

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

231144456 is a wasteful number, since it uses less digits than its factorization.

231144456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9631028 (or 9631024 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 231144456 is about 15203.4356643490. The cubic root of 231144456 is about 613.7071180407.

Adding to 231144456 its reverse (654441132), we get a palindrome (885585588).

The spelling of 231144456 in words is "two hundred thirty-one million, one hundred forty-four thousand, four hundred fifty-six".