11011971 has 8 divisors (see below), whose sum is σ = 15546384. Its totient is φ = 6909440.

The previous prime is 11011939. The next prime is 11011981. The reversal of 11011971 is 17911011.

11011971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11011971 - 2⁵ = 11011939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107910 + ... + 108011.

It is an arithmetic number, because the mean of its divisors is an integer number (1943298).

Almost surely, 2^11011971 is an apocalyptic number.

11011971 is a deficient number, since it is larger than the sum of its proper divisors (4534413).

11011971 is a wasteful number, since it uses less digits than its factorization.

11011971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215941.

The product of its (nonzero) digits is 63, while the sum is 21.

The square root of 11011971 is about 3318.4289957750. The cubic root of 11011971 is about 222.4786563712.

Adding to 11011971 its reverse (17911011), we get a palindrome (28922982).

The spelling of 11011971 in words is "eleven million, eleven thousand, nine hundred seventy-one".