123022391 has 2 divisors, whose sum is σ = 123022392. Its totient is φ = 123022390.

The previous prime is 123022337. The next prime is 123022399. The reversal of 123022391 is 193220321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123022391 - 2⁶ = 123022327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123022399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61511195 + 61511196.

It is an arithmetic number, because the mean of its divisors is an integer number (61511196).

Almost surely, 2^123022391 is an apocalyptic number.

123022391 is a deficient number, since it is larger than the sum of its proper divisors (1).

123022391 is an equidigital number, since it uses as much as digits as its factorization.

123022391 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 123022391 is about 11091.5459247122. The cubic root of 123022391 is about 497.3491589196.

The spelling of 123022391 in words is "one hundred twenty-three million, twenty-two thousand, three hundred ninety-one".