231423923 has 2 divisors, whose sum is σ = 231423924. Its totient is φ = 231423922.

The previous prime is 231423889. The next prime is 231423931. The reversal of 231423923 is 329324132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231423923 - 2⁶ = 231423859 is a prime.

It is not a weakly prime, because it can be changed into another prime (231423223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115711961 + 115711962.

It is an arithmetic number, because the mean of its divisors is an integer number (115711962).

Almost surely, 2^231423923 is an apocalyptic number.

231423923 is a deficient number, since it is larger than the sum of its proper divisors (1).

231423923 is an equidigital number, since it uses as much as digits as its factorization.

231423923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 231423923 is about 15212.6238039334. The cubic root of 231423923 is about 613.9543542126.

The spelling of 231423923 in words is "two hundred thirty-one million, four hundred twenty-three thousand, nine hundred twenty-three".