11289311 has 8 divisors (see below), whose sum is σ = 12359424. Its totient is φ = 10226520.

The previous prime is 11289277. The next prime is 11289347. The reversal of 11289311 is 11398211.

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 11289311 - 2⁶ = 11289247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11289361) 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, 1706 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^11289311 is an apocalyptic number.

11289311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11289311 is a deficient number, since it is larger than the sum of its proper divisors (1070113).

11289311 is a wasteful number, since it uses less digits than its factorization.

11289311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661.

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

The square root of 11289311 is about 3359.9569937724. The cubic root of 11289311 is about 224.3309242961.

Subtracting 11289311 from its reverse (11398211), we obtain a square (108900 = 330²).

The spelling of 11289311 in words is "eleven million, two hundred eighty-nine thousand, three hundred eleven".