13287123 has 12 divisors (see below), whose sum is σ = 20027280. Its totient is φ = 8472816.

The previous prime is 13287119. The next prime is 13287139. The reversal of 13287123 is 32178231.

It is not a de Polignac number, because 13287123 - 2² = 13287119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13287143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31888 + ... + 32301.

It is an arithmetic number, because the mean of its divisors is an integer number (1668940).

Almost surely, 2^13287123 is an apocalyptic number.

13287123 is a deficient number, since it is larger than the sum of its proper divisors (6740157).

13287123 is a wasteful number, since it uses less digits than its factorization.

13287123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64218 (or 64215 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 13287123 is about 3645.1506141722. The cubic root of 13287123 is about 236.8519611727.

The spelling of 13287123 in words is "thirteen million, two hundred eighty-seven thousand, one hundred twenty-three".