1111291 has 8 divisors (see below), whose sum is σ = 1221120. Its totient is φ = 1006632.

The previous prime is 1111289. The next prime is 1111301. The reversal of 1111291 is 1921111.

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 1111291 - 2¹ = 1111289 is a prime.

It is a Duffinian number.

1111291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1111211) 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, 835 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (152640).

2^1111291 is an apocalyptic number.

1111291 is a deficient number, since it is larger than the sum of its proper divisors (109829).

1111291 is a wasteful number, since it uses less digits than its factorization.

1111291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585.

The product of its digits is 18, while the sum is 16.

The square root of 1111291 is about 1054.1778787283. The cubic root of 1111291 is about 103.5800061295.

The spelling of 1111291 in words is "one million, one hundred eleven thousand, two hundred ninety-one".