11397213 has 16 divisors (see below), whose sum is σ = 17619840. Its totient is φ = 7267392.

The previous prime is 11397163. The next prime is 11397223. The reversal of 11397213 is 31279311.

It is not a de Polignac number, because 11397213 - 2¹² = 11393117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11397223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8556 + ... + 9797.

It is an arithmetic number, because the mean of its divisors is an integer number (1101240).

Almost surely, 2^11397213 is an apocalyptic number.

It is an amenable number.

11397213 is a deficient number, since it is larger than the sum of its proper divisors (6222627).

11397213 is a wasteful number, since it uses less digits than its factorization.

11397213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18385 (or 18379 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 11397213 is about 3375.9758589184. The cubic root of 11397213 is about 225.0433694177.

The spelling of 11397213 in words is "eleven million, three hundred ninety-seven thousand, two hundred thirteen".