123091223 has 2 divisors, whose sum is σ = 123091224. Its totient is φ = 123091222.

The previous prime is 123091211. The next prime is 123091231. The reversal of 123091223 is 322190321.

It is a strong prime.

It is an emirp because it is prime and its reverse (322190321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123091223 - 2⁸ = 123090967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123091273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61545611 + 61545612.

It is an arithmetic number, because the mean of its divisors is an integer number (61545612).

Almost surely, 2^123091223 is an apocalyptic number.

123091223 is a deficient number, since it is larger than the sum of its proper divisors (1).

123091223 is an equidigital number, since it uses as much as digits as its factorization.

123091223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 123091223 is about 11094.6483946090. The cubic root of 123091223 is about 497.4418985539.

The spelling of 123091223 in words is "one hundred twenty-three million, ninety-one thousand, two hundred twenty-three".