231232123 has 2 divisors, whose sum is σ = 231232124. Its totient is φ = 231232122.

The previous prime is 231232117. The next prime is 231232153. The reversal of 231232123 is 321232132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231232123 - 2⁵ = 231232091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231232123.

It is not a weakly prime, because it can be changed into another prime (231232153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115616061 + 115616062.

It is an arithmetic number, because the mean of its divisors is an integer number (115616062).

Almost surely, 2^231232123 is an apocalyptic number.

231232123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231232123 is an equidigital number, since it uses as much as digits as its factorization.

231232123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 231232123 is about 15206.3185222459. The cubic root of 231232123 is about 613.7846958787.

Adding to 231232123 its reverse (321232132), we get a palindrome (552464255).

Subtracting 231232123 from its reverse (321232132), we obtain a palindrome (90000009).

The spelling of 231232123 in words is "two hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty-three".