123357887 has 4 divisors (see below), whose sum is σ = 123380256. Its totient is φ = 123335520.

The previous prime is 123357881. The next prime is 123357917. The reversal of 123357887 is 788753321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788753321 = 109 ⋅7236269.

It is a cyclic number.

It is not a de Polignac number, because 123357887 - 2²⁶ = 56249023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123357881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3623 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (30845064).

Almost surely, 2^123357887 is an apocalyptic number.

123357887 is a deficient number, since it is larger than the sum of its proper divisors (22369).

123357887 is an equidigital number, since it uses as much as digits as its factorization.

123357887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22368.

The product of its digits is 282240, while the sum is 44.

The square root of 123357887 is about 11106.6595788293. The cubic root of 123357887 is about 497.8008577273.

The spelling of 123357887 in words is "one hundred twenty-three million, three hundred fifty-seven thousand, eight hundred eighty-seven".