11019231 has 12 divisors (see below), whose sum is σ = 16609008. Its totient is φ = 7026624.

The previous prime is 11019209. The next prime is 11019241. The reversal of 11019231 is 13291011.

It is not a de Polignac number, because 11019231 - 2⁹ = 11018719 is a prime.

It is a super-2 number, since 2×11019231² = 242846903662722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11019241) 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 11 ways as a sum of consecutive naturals, for example, 26410 + ... + 26823.

It is an arithmetic number, because the mean of its divisors is an integer number (1384084).

Almost surely, 2^11019231 is an apocalyptic number.

11019231 is a deficient number, since it is larger than the sum of its proper divisors (5589777).

11019231 is a wasteful number, since it uses less digits than its factorization.

11019231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53262 (or 53259 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11019231 is about 3319.5227066553. The cubic root of 11019231 is about 222.5275377270.

The spelling of 11019231 in words is "eleven million, nineteen thousand, two hundred thirty-one".