11211983 has 8 divisors (see below), whose sum is σ = 11676336. Its totient is φ = 10756800.

The previous prime is 11211961. The next prime is 11211989. The reversal of 11211983 is 38911211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211983 - 2¹² = 11207887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211989) 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 7 ways as a sum of consecutive naturals, for example, 260 + ... + 4742.

It is an arithmetic number, because the mean of its divisors is an integer number (1459542).

Almost surely, 2^11211983 is an apocalyptic number.

11211983 is a deficient number, since it is larger than the sum of its proper divisors (464353).

11211983 is an equidigital number, since it uses as much as digits as its factorization.

11211983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585.

The product of its digits is 432, while the sum is 26.

The square root of 11211983 is about 3348.4299305794. The cubic root of 11211983 is about 223.8175531283.

The spelling of 11211983 in words is "eleven million, two hundred eleven thousand, nine hundred eighty-three".