1183281 has 16 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 685520.

The previous prime is 1183279. The next prime is 1183333. The reversal of 1183281 is 1823811.

It is not a de Polignac number, because 1183281 - 2¹ = 1183279 is a prime.

It is a super-2 number, since 2×1183281² = 2800307849922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1183201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2^1183281 is an apocalyptic number.

1183281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1183281 is a deficient number, since it is larger than the sum of its proper divisors (613839).

1183281 is a wasteful number, since it uses less digits than its factorization.

1183281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its digits is 384, while the sum is 24.

The square root of 1183281 is about 1087.7872034548. The cubic root of 1183281 is about 105.7700306886.

The spelling of 1183281 in words is "one million, one hundred eighty-three thousand, two hundred eighty-one".