13387723 has 4 divisors (see below), whose sum is σ = 14092360. Its totient is φ = 12683088.

The previous prime is 13387711. The next prime is 13387727. The reversal of 13387723 is 32778331.

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

It is a cyclic number.

It is not a de Polignac number, because 13387723 - 2²¹ = 11290571 is a prime.

It is a super-2 number, since 2×13387723² = 358462254249458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13387727) 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, 352290 + ... + 352327.

It is an arithmetic number, because the mean of its divisors is an integer number (3523090).

Almost surely, 2^13387723 is an apocalyptic number.

13387723 is a deficient number, since it is larger than the sum of its proper divisors (704637).

13387723 is an equidigital number, since it uses as much as digits as its factorization.

13387723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704636.

The product of its digits is 21168, while the sum is 34.

The square root of 13387723 is about 3658.9237488639. The cubic root of 13387723 is about 237.4482132702.

The spelling of 13387723 in words is "thirteen million, three hundred eighty-seven thousand, seven hundred twenty-three".