11613971 has 4 divisors (see below), whose sum is σ = 11726832. Its totient is φ = 11501112.

The previous prime is 11613937. The next prime is 11613977. The reversal of 11613971 is 17931611.

11613971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17931611 = 19 ⋅943769.

It is a cyclic number.

It is not a de Polignac number, because 11613971 - 2¹⁰ = 11612947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11613977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56276 + ... + 56481.

It is an arithmetic number, because the mean of its divisors is an integer number (2931708).

Almost surely, 2^11613971 is an apocalyptic number.

11613971 is a deficient number, since it is larger than the sum of its proper divisors (112861).

11613971 is a wasteful number, since it uses less digits than its factorization.

11613971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112860.

The product of its digits is 1134, while the sum is 29.

The square root of 11613971 is about 3407.9276694202. The cubic root of 11613971 is about 226.4610825770.

The spelling of 11613971 in words is "eleven million, six hundred thirteen thousand, nine hundred seventy-one".