11003971 has 8 divisors (see below), whose sum is σ = 12129264. Its totient is φ = 9899520.

The previous prime is 11003957. The next prime is 11004017. The reversal of 11003971 is 17930011.

11003971 is digitally balanced in base 2, 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 11003971 - 2⁵ = 11003939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003771) 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, 4090 + ... + 6223.

It is an arithmetic number, because the mean of its divisors is an integer number (1516158).

Almost surely, 2^11003971 is an apocalyptic number.

11003971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11003971 is a deficient number, since it is larger than the sum of its proper divisors (1125293).

11003971 is a wasteful number, since it uses less digits than its factorization.

11003971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421.

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 11003971 is about 3317.2233871116. The cubic root of 11003971 is about 222.4247677310.

Adding to 11003971 its reverse (17930011), we get a palindrome (28933982).

It can be divided in two parts, 1100 and 3971, that multiplied together give a square (4368100 = 2090²).

The spelling of 11003971 in words is "eleven million, three thousand, nine hundred seventy-one".