1117213 has 4 divisors (see below), whose sum is σ = 1119328. Its totient is φ = 1115100.

The previous prime is 1117199. The next prime is 1117243. The reversal of 1117213 is 3127111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1117213 - 2⁹ = 1116701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117243) 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, 520 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (279832).

2^1117213 is an apocalyptic number.

It is an amenable number.

1117213 is a deficient number, since it is larger than the sum of its proper divisors (2115).

1117213 is a wasteful number, since it uses less digits than its factorization.

1117213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114.

The product of its digits is 42, while the sum is 16.

The square root of 1117213 is about 1056.9829705345. The cubic root of 1117213 is about 103.7636707200.

The spelling of 1117213 in words is "one million, one hundred seventeen thousand, two hundred thirteen".