11513071 has 4 divisors (see below), whose sum is σ = 11536200. Its totient is φ = 11489944.

The previous prime is 11513057. The next prime is 11513077. The reversal of 11513071 is 17031511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11513071 - 2⁵ = 11513039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513077) 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 3 ways as a sum of consecutive naturals, for example, 10801 + ... + 11818.

It is an arithmetic number, because the mean of its divisors is an integer number (2884050).

Almost surely, 2^11513071 is an apocalyptic number.

11513071 is a deficient number, since it is larger than the sum of its proper divisors (23129).

11513071 is an equidigital number, since it uses as much as digits as its factorization.

11513071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23128.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 11513071 is about 3393.0916580605. The cubic root of 11513071 is about 225.8033570261.

Adding to 11513071 its reverse (17031511), we get a palindrome (28544582).

The spelling of 11513071 in words is "eleven million, five hundred thirteen thousand, seventy-one".