11984131 has 2 divisors, whose sum is σ = 11984132. Its totient is φ = 11984130.

The previous prime is 11984129. The next prime is 11984149. The reversal of 11984131 is 13148911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11984131 - 2¹ = 11984129 is a prime.

It is a super-2 number, since 2×11984131² = 287238791650322, which contains 22 as substring.

Together with 11984129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11984131.

It is not a weakly prime, because it can be changed into another prime (11984171) 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 as a sum of consecutive naturals, namely, 5992065 + 5992066.

It is an arithmetic number, because the mean of its divisors is an integer number (5992066).

Almost surely, 2^11984131 is an apocalyptic number.

11984131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11984131 is an equidigital number, since it uses as much as digits as its factorization.

11984131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 11984131 is about 3461.8103645347. The cubic root of 11984131 is about 228.8418847126.

It can be divided in two parts, 1198 and 4131, that added together give a square (5329 = 73²).

The spelling of 11984131 in words is "eleven million, nine hundred eighty-four thousand, one hundred thirty-one".