11311001 has 24 divisors (see below), whose sum is σ = 13492224. Its totient is φ = 9434880.

The previous prime is 11310989. The next prime is 11311019. The reversal of 11311001 is 10011311.

It is a de Polignac number, because none of the positive numbers 2^k-11311001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11311001.

It is not an unprimeable number, because it can be changed into a prime (11311031) 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 23 ways as a sum of consecutive naturals, for example, 89000 + ... + 89126.

It is an arithmetic number, because the mean of its divisors is an integer number (562176).

Almost surely, 2^11311001 is an apocalyptic number.

It is an amenable number.

11311001 is a deficient number, since it is larger than the sum of its proper divisors (2181223).

11311001 is a wasteful number, since it uses less digits than its factorization.

11311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 11311001 is about 3363.1831648009. The cubic root of 11311001 is about 224.4745003718.

Adding to 11311001 its reverse (10011311), we get a palindrome (21322312).

The spelling of 11311001 in words is "eleven million, three hundred eleven thousand, one".