7133213 has 4 divisors (see below), whose sum is σ = 7138908. Its totient is φ = 7127520.

The previous prime is 7133207. The next prime is 7133219. The reversal of 7133213 is 3123317.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (7133207) and next prime (7133219).

It can be written as a sum of positive squares in 2 ways, for example, as 466489 + 6666724 = 683^2 + 2582^2 .

It is a cyclic number.

It is not a de Polignac number, because 7133213 - 2¹⁰ = 7132189 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 (7133219) 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, 56 + ... + 3777.

It is an arithmetic number, because the mean of its divisors is an integer number (1784727).

Almost surely, 2^7133213 is an apocalyptic number.

It is an amenable number.

7133213 is a deficient number, since it is larger than the sum of its proper divisors (5695).

7133213 is a wasteful number, since it uses less digits than its factorization.

7133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694.

The product of its digits is 378, while the sum is 20.

The square root of 7133213 is about 2670.8075557778. The cubic root of 7133213 is about 192.4989644066.

The spelling of 7133213 in words is "seven million, one hundred thirty-three thousand, two hundred thirteen".