11001023 has 16 divisors (see below), whose sum is σ = 12869280. Its totient is φ = 9292800.

The previous prime is 11001013. The next prime is 11001031. The reversal of 11001023 is 32010011.

It is not a de Polignac number, because 11001023 - 2⁴ = 11001007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11001023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16313 + ... + 16973.

It is an arithmetic number, because the mean of its divisors is an integer number (804330).

Almost surely, 2^11001023 is an apocalyptic number.

11001023 is a deficient number, since it is larger than the sum of its proper divisors (1868257).

11001023 is a wasteful number, since it uses less digits than its factorization.

11001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 11001023 is about 3316.7790098226. The cubic root of 11001023 is about 222.4049031815.

Adding to 11001023 its reverse (32010011), we get a palindrome (43011034).

The spelling of 11001023 in words is "eleven million, one thousand, twenty-three".