11889131 has 4 divisors (see below), whose sum is σ = 11914032. Its totient is φ = 11864232.

The previous prime is 11889121. The next prime is 11889179. The reversal of 11889131 is 13198811.

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 11889131 - 2⁶ = 11889067 is a prime.

It is a super-2 number, since 2×11889131² = 282702871870322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11889121) 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, 11720 + ... + 12693.

It is an arithmetic number, because the mean of its divisors is an integer number (2978508).

Almost surely, 2^11889131 is an apocalyptic number.

11889131 is a deficient number, since it is larger than the sum of its proper divisors (24901).

11889131 is an equidigital number, since it uses as much as digits as its factorization.

11889131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24900.

The product of its digits is 1728, while the sum is 32.

The square root of 11889131 is about 3448.0619193976. The cubic root of 11889131 is about 228.2355918649.

The spelling of 11889131 in words is "eleven million, eight hundred eighty-nine thousand, one hundred thirty-one".