123246391 has 2 divisors, whose sum is σ = 123246392. Its totient is φ = 123246390.

The previous prime is 123246373. The next prime is 123246427. The reversal of 123246391 is 193642321.

It is a weak prime.

It is an emirp because it is prime and its reverse (193642321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123246391 - 2¹¹ = 123244343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123246341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61623195 + 61623196.

It is an arithmetic number, because the mean of its divisors is an integer number (61623196).

Almost surely, 2^123246391 is an apocalyptic number.

123246391 is a deficient number, since it is larger than the sum of its proper divisors (1).

123246391 is an equidigital number, since it uses as much as digits as its factorization.

123246391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 123246391 is about 11101.6391132121. The cubic root of 123246391 is about 497.6508347978.

The spelling of 123246391 in words is "one hundred twenty-three million, two hundred forty-six thousand, three hundred ninety-one".