11321887 has 4 divisors (see below), whose sum is σ = 11365200. Its totient is φ = 11278576.

The previous prime is 11321839. The next prime is 11321897. The reversal of 11321887 is 78812311.

It is a happy number.

11321887 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 11321887 - 2⁷ = 11321759 is a prime.

It is a super-3 number, since 3×11321887³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21262 + ... + 21787.

It is an arithmetic number, because the mean of its divisors is an integer number (2841300).

Almost surely, 2^11321887 is an apocalyptic number.

11321887 is a deficient number, since it is larger than the sum of its proper divisors (43313).

11321887 is an equidigital number, since it uses as much as digits as its factorization.

11321887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43312.

The product of its digits is 2688, while the sum is 31.

The square root of 11321887 is about 3364.8011828338. The cubic root of 11321887 is about 224.5464906372.

The spelling of 11321887 in words is "eleven million, three hundred twenty-one thousand, eight hundred eighty-seven".