231222923 has 2 divisors, whose sum is σ = 231222924. Its totient is φ = 231222922.

The previous prime is 231222889. The next prime is 231223019. The reversal of 231222923 is 329222132.

231222923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231222923 - 2¹⁴ = 231206539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231222892 and 231222901.

It is not a weakly prime, because it can be changed into another prime (231222023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115611461 + 115611462.

It is an arithmetic number, because the mean of its divisors is an integer number (115611462).

Almost surely, 2^231222923 is an apocalyptic number.

231222923 is a deficient number, since it is larger than the sum of its proper divisors (1).

231222923 is an equidigital number, since it uses as much as digits as its factorization.

231222923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 231222923 is about 15206.0160134073. The cubic root of 231222923 is about 613.7765555823.

The spelling of 231222923 in words is "two hundred thirty-one million, two hundred twenty-two thousand, nine hundred twenty-three".