11982361 has 4 divisors (see below), whose sum is σ = 11999232. Its totient is φ = 11965492.

The previous prime is 11982359. The next prime is 11982371. The reversal of 11982361 is 16328911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16328911 = 743 ⋅21977.

It is a cyclic number.

It is not a de Polignac number, because 11982361 - 2¹ = 11982359 is a prime.

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 not an unprimeable number, because it can be changed into a prime (11982301) 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, 7321 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (2999808).

Almost surely, 2^11982361 is an apocalyptic number.

It is an amenable number.

11982361 is a deficient number, since it is larger than the sum of its proper divisors (16871).

11982361 is an equidigital number, since it uses as much as digits as its factorization.

11982361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16870.

The product of its digits is 2592, while the sum is 31.

The square root of 11982361 is about 3461.5547085089. The cubic root of 11982361 is about 228.8306178665.

The spelling of 11982361 in words is "eleven million, nine hundred eighty-two thousand, three hundred sixty-one".