11201391 has 24 divisors (see below), whose sum is σ = 17218656. Its totient is φ = 7001280.

The previous prime is 11201389. The next prime is 11201413. The reversal of 11201391 is 19310211.

It is not a de Polignac number, because 11201391 - 2¹ = 11201389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10461 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (717444).

Almost surely, 2^11201391 is an apocalyptic number.

11201391 is a deficient number, since it is larger than the sum of its proper divisors (6017265).

11201391 is a wasteful number, since it uses less digits than its factorization.

11201391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11201391 is about 3346.8479200585. The cubic root of 11201391 is about 223.7470505109.

The spelling of 11201391 in words is "eleven million, two hundred one thousand, three hundred ninety-one".