11281983 has 12 divisors (see below), whose sum is σ = 15727320. Its totient is φ = 7193296.

The previous prime is 11281979. The next prime is 11281987. The reversal of 11281983 is 38918211.

It is an interprime number because it is at equal distance from previous prime (11281979) and next prime (11281987).

It is not a de Polignac number, because 11281983 - 2² = 11281979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281987) 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 11 ways as a sum of consecutive naturals, for example, 1968 + ... + 5141.

It is an arithmetic number, because the mean of its divisors is an integer number (1310610).

Almost surely, 2^11281983 is an apocalyptic number.

11281983 is a deficient number, since it is larger than the sum of its proper divisors (4445337).

11281983 is an equidigital number, since it uses as much as digits as its factorization.

11281983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158 (or 7135 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 11281983 is about 3358.8663266049. The cubic root of 11281983 is about 224.2823753388.

The spelling of 11281983 in words is "eleven million, two hundred eighty-one thousand, nine hundred eighty-three".