3213445 has 8 divisors (see below), whose sum is σ = 4023936. Its totient is φ = 2458896.

The previous prime is 3213439. The next prime is 3213473. The reversal of 3213445 is 5443123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3213445 - 2¹³ = 3205253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13857 + ... + 14086.

It is an arithmetic number, because the mean of its divisors is an integer number (502992).

Almost surely, 2^3213445 is an apocalyptic number.

It is an amenable number.

3213445 is a deficient number, since it is larger than the sum of its proper divisors (810491).

3213445 is a wasteful number, since it uses less digits than its factorization.

3213445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27971.

The product of its digits is 1440, while the sum is 22.

The square root of 3213445 is about 1792.6084346560. The cubic root of 3213445 is about 147.5673540900.

Adding to 3213445 its reverse (5443123), we get a palindrome (8656568).

The spelling of 3213445 in words is "three million, two hundred thirteen thousand, four hundred forty-five".