231134144 has 28 divisors (see below), whose sum is σ = 461598264. Its totient is φ = 114825984.

The previous prime is 231134129. The next prime is 231134149. The reversal of 231134144 is 441431132.

231134144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231134144² = 106845985045225472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231134149) 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, 1454 + ... + 21549.

Almost surely, 2^231134144 is an apocalyptic number.

It is an amenable number.

231134144 is a deficient number, since it is larger than the sum of its proper divisors (230464120).

231134144 is a wasteful number, since it uses less digits than its factorization.

231134144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23172 (or 23162 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 231134144 is about 15203.0965266948. The cubic root of 231134144 is about 613.6979915086.

Adding to 231134144 its reverse (441431132), we get a palindrome (672565276).

The spelling of 231134144 in words is "two hundred thirty-one million, one hundred thirty-four thousand, one hundred forty-four".