913213 has 6 divisors (see below), whose sum is σ = 1062366. Its totient is φ = 782712.

The previous prime is 913183. The next prime is 913217. The reversal of 913213 is 312319.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 432964 = 693^2 + 658^2 .

It is not a de Polignac number, because 913213 - 2¹⁷ = 782141 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 (913217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9270 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (177061).

2⁹¹³²¹³ is an apocalyptic number.

It is an amenable number.

913213 is a deficient number, since it is larger than the sum of its proper divisors (149153).

913213 is a wasteful number, since it uses less digits than its factorization.

913213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18651 (or 18644 counting only the distinct ones).

The product of its digits is 162, while the sum is 19.

The square root of 913213 is about 955.6217871104. The cubic root of 913213 is about 97.0191268479.

The spelling of 913213 in words is "nine hundred thirteen thousand, two hundred thirteen".