123288647 has 2 divisors, whose sum is σ = 123288648. Its totient is φ = 123288646.

The previous prime is 123288637. The next prime is 123288677. The reversal of 123288647 is 746882321.

It is a weak prime.

It is an emirp because it is prime and its reverse (746882321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123288647 - 2¹⁰ = 123287623 is a prime.

It is a super-3 number, since 3×123288647³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123288617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61644323 + 61644324.

It is an arithmetic number, because the mean of its divisors is an integer number (61644324).

Almost surely, 2^123288647 is an apocalyptic number.

123288647 is a deficient number, since it is larger than the sum of its proper divisors (1).

123288647 is an equidigital number, since it uses as much as digits as its factorization.

123288647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 123288647 is about 11103.5420925036. The cubic root of 123288647 is about 497.7077028074.

The spelling of 123288647 in words is "one hundred twenty-three million, two hundred eighty-eight thousand, six hundred forty-seven".