3213523 has 4 divisors (see below), whose sum is σ = 3249720. Its totient is φ = 3177328.

The previous prime is 3213499. The next prime is 3213559. The reversal of 3213523 is 3253123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3213523 - 2⁹ = 3213011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213523.

It is not an unprimeable number, because it can be changed into a prime (3213593) 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, 17965 + ... + 18142.

It is an arithmetic number, because the mean of its divisors is an integer number (812430).

Almost surely, 2^3213523 is an apocalyptic number.

3213523 is a deficient number, since it is larger than the sum of its proper divisors (36197).

3213523 is an equidigital number, since it uses as much as digits as its factorization.

3213523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36196.

The product of its digits is 540, while the sum is 19.

The square root of 3213523 is about 1792.6301905301. The cubic root of 3213523 is about 147.5685480485.

Adding to 3213523 its reverse (3253123), we get a palindrome (6466646).

It can be divided in two parts, 321 and 3523, that added together give a square (3844 = 62²).

The spelling of 3213523 in words is "three million, two hundred thirteen thousand, five hundred twenty-three".