783213 has 4 divisors (see below), whose sum is σ = 1044288. Its totient is φ = 522140.

The previous prime is 783197. The next prime is 783227. The reversal of 783213 is 312387.

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.

It is a cyclic number.

It is not a de Polignac number, because 783213 - 2⁴ = 783197 is a prime.

It is a super-3 number, since 3×783213³ = 1441321672357333791, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783283) 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, 130533 + ... + 130538.

It is an arithmetic number, because the mean of its divisors is an integer number (261072).

2⁷⁸³²¹³ is an apocalyptic number.

It is an amenable number.

783213 is a deficient number, since it is larger than the sum of its proper divisors (261075).

783213 is a wasteful number, since it uses less digits than its factorization.

783213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261074.

The product of its digits is 1008, while the sum is 24.

The square root of 783213 is about 884.9932203130. The cubic root of 783213 is about 92.1778616563.

The spelling of 783213 in words is "seven hundred eighty-three thousand, two hundred thirteen".