231123412 has 24 divisors (see below), whose sum is σ = 454519296. Its totient is φ = 102033888.

The previous prime is 231123397. The next prime is 231123413. The reversal of 231123412 is 214321132.

It is a happy number.

231123412 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

231123412 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 231123412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231123413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95428 + ... + 97819.

It is an arithmetic number, because the mean of its divisors is an integer number (18938304).

Almost surely, 2^231123412 is an apocalyptic number.

It is an amenable number.

231123412 is a deficient number, since it is larger than the sum of its proper divisors (223395884).

231123412 is a wasteful number, since it uses less digits than its factorization.

231123412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193287 (or 193285 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 231123412 is about 15202.7435681853. The cubic root of 231123412 is about 613.6884929714.

Adding to 231123412 its reverse (214321132), we get a palindrome (445444544).

The spelling of 231123412 in words is "two hundred thirty-one million, one hundred twenty-three thousand, four hundred twelve".