231322123 has 16 divisors (see below), whose sum is σ = 243057024. Its totient is φ = 219954240.

The previous prime is 231322103. The next prime is 231322139. The reversal of 231322123 is 321223132.

231322123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231322123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231322123.

It is not an unprimeable number, because it can be changed into a prime (231322103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293536 + ... + 294322.

It is an arithmetic number, because the mean of its divisors is an integer number (15191064).

Almost surely, 2^231322123 is an apocalyptic number.

231322123 is a deficient number, since it is larger than the sum of its proper divisors (11734901).

231322123 is a wasteful number, since it uses less digits than its factorization.

231322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002.

The product of its digits is 432, while the sum is 19.

The square root of 231322123 is about 15209.2775305075. The cubic root of 231322123 is about 613.8643178282.

Adding to 231322123 its reverse (321223132), we get a palindrome (552545255).

The spelling of 231322123 in words is "two hundred thirty-one million, three hundred twenty-two thousand, one hundred twenty-three".