11881312 has 12 divisors (see below), whose sum is σ = 23391396. Its totient is φ = 5940640.

The previous prime is 11881301. The next prime is 11881319. The reversal of 11881312 is 21318811.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185614 + ... + 185677.

It is an arithmetic number, because the mean of its divisors is an integer number (1949283).

Almost surely, 2^11881312 is an apocalyptic number.

It is an amenable number.

11881312 is a deficient number, since it is larger than the sum of its proper divisors (11510084).

11881312 is an equidigital number, since it uses as much as digits as its factorization.

11881312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371301 (or 371293 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 11881312 is about 3446.9279075722. The cubic root of 11881312 is about 228.1855471237.

It can be divided in two parts, 1188 and 1312, that added together give a square (2500 = 50²).

The spelling of 11881312 in words is "eleven million, eight hundred eighty-one thousand, three hundred twelve".