11105531 has 2 divisors, whose sum is σ = 11105532. Its totient is φ = 11105530.

The previous prime is 11105473. The next prime is 11105537. The reversal of 11105531 is 13550111.

It is a strong prime.

It is an emirp because it is prime and its reverse (13550111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11105531 - 2⁶ = 11105467 is a prime.

It is a super-2 number, since 2×11105531² = 246665637583922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11105537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5552765 + 5552766.

It is an arithmetic number, because the mean of its divisors is an integer number (5552766).

Almost surely, 2^11105531 is an apocalyptic number.

11105531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11105531 is an equidigital number, since it uses as much as digits as its factorization.

11105531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 11105531 is about 3332.4962115507. The cubic root of 11105531 is about 223.1069553365.

Adding to 11105531 its reverse (13550111), we get a palindrome (24655642).

The spelling of 11105531 in words is "eleven million, one hundred five thousand, five hundred thirty-one".