11543011 has 2 divisors, whose sum is σ = 11543012. Its totient is φ = 11543010.

The previous prime is 11543009. The next prime is 11543023. The reversal of 11543011 is 11034511.

It is a weak prime.

It is an emirp because it is prime and its reverse (11034511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11543011 - 2¹ = 11543009 is a prime.

It is a super-2 number, since 2×11543011² = 266482205892242, which contains 22 as substring.

Together with 11543009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11543041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771505 + 5771506.

It is an arithmetic number, because the mean of its divisors is an integer number (5771506).

Almost surely, 2^11543011 is an apocalyptic number.

11543011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543011 is an equidigital number, since it uses as much as digits as its factorization.

11543011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11543011 is about 3397.5006990433. The cubic root of 11543011 is about 225.9989231682.

Adding to 11543011 its reverse (11034511), we get a palindrome (22577522).

The spelling of 11543011 in words is "eleven million, five hundred forty-three thousand, eleven".