123154223 has 2 divisors, whose sum is σ = 123154224. Its totient is φ = 123154222.

The previous prime is 123154211. The next prime is 123154231. The reversal of 123154223 is 322451321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123154223 - 2¹² = 123150127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123154243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61577111 + 61577112.

It is an arithmetic number, because the mean of its divisors is an integer number (61577112).

Almost surely, 2^123154223 is an apocalyptic number.

123154223 is a deficient number, since it is larger than the sum of its proper divisors (1).

123154223 is an equidigital number, since it uses as much as digits as its factorization.

123154223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 123154223 is about 11097.4872381094. The cubic root of 123154223 is about 497.5267502430.

The spelling of 123154223 in words is "one hundred twenty-three million, one hundred fifty-four thousand, two hundred twenty-three".