123208887 has 4 divisors (see below), whose sum is σ = 164278520. Its totient is φ = 82139256.

The previous prime is 123208879. The next prime is 123208919. The reversal of 123208887 is 788802321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123208887 - 2³ = 123208879 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 (123208807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20534812 + ... + 20534817.

It is an arithmetic number, because the mean of its divisors is an integer number (41069630).

Almost surely, 2^123208887 is an apocalyptic number.

123208887 is a deficient number, since it is larger than the sum of its proper divisors (41069633).

123208887 is an equidigital number, since it uses as much as digits as its factorization.

123208887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41069632.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 123208887 is about 11099.9498647516. The cubic root of 123208887 is about 497.6003511278.

The spelling of 123208887 in words is "one hundred twenty-three million, two hundred eight thousand, eight hundred eighty-seven".