231144004 has 36 divisors (see below), whose sum is σ = 500594304. Its totient is φ = 91439712.

The previous prime is 231143993. The next prime is 231144031. The reversal of 231144004 is 400441132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19692 + ... + 29155.

Almost surely, 2^231144004 is an apocalyptic number.

It is an amenable number.

231144004 is an abundant number, since it is smaller than the sum of its proper divisors (269450300).

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

231144004 is a wasteful number, since it uses less digits than its factorization.

231144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48884 (or 48869 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 231144004 is about 15203.4207992807. The cubic root of 231144004 is about 613.7067180084.

Adding to 231144004 its reverse (400441132), we get a palindrome (631585136).

The spelling of 231144004 in words is "two hundred thirty-one million, one hundred forty-four thousand, four".