11213291 has 4 divisors (see below), whose sum is σ = 11222832. Its totient is φ = 11203752.

The previous prime is 11213281. The next prime is 11213299. The reversal of 11213291 is 19231211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213299) 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, 2711 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (2805708).

Almost surely, 2^11213291 is an apocalyptic number.

11213291 is a deficient number, since it is larger than the sum of its proper divisors (9541).

11213291 is an equidigital number, since it uses as much as digits as its factorization.

11213291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9540.

The product of its digits is 108, while the sum is 20.

The square root of 11213291 is about 3348.6252403038. The cubic root of 11213291 is about 223.8262563754.

The spelling of 11213291 in words is "eleven million, two hundred thirteen thousand, two hundred ninety-one".