3523213 has 4 divisors (see below), whose sum is σ = 3537180. Its totient is φ = 3509248.

The previous prime is 3523187. The next prime is 3523231. The reversal of 3523213 is 3123253.

3523213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123253 = 7 ⋅446179.

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 218089 = 1818^2 + 467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3523213 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 (3523313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6598 + ... + 7111.

It is an arithmetic number, because the mean of its divisors is an integer number (884295).

Almost surely, 2^3523213 is an apocalyptic number.

It is an amenable number.

3523213 is a deficient number, since it is larger than the sum of its proper divisors (13967).

3523213 is a wasteful number, since it uses less digits than its factorization.

3523213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13966.

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

The square root of 3523213 is about 1877.0223759988. The cubic root of 3523213 is about 152.1643680153.

Adding to 3523213 its reverse (3123253), we get a palindrome (6646466).

It can be divided in two parts, 35232 and 13, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 3523213 in words is "three million, five hundred twenty-three thousand, two hundred thirteen".