3216401 has 4 divisors (see below), whose sum is σ = 3220992. Its totient is φ = 3211812.

The previous prime is 3216359. The next prime is 3216403. The reversal of 3216401 is 1046123.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1046123 = 13 ⋅80471.

It is a cyclic number.

It is not a de Polignac number, because 3216401 - 2⁶ = 3216337 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 3216401.

It is not an unprimeable number, because it can be changed into a prime (3216403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (805248).

Almost surely, 2^3216401 is an apocalyptic number.

It is an amenable number.

3216401 is a deficient number, since it is larger than the sum of its proper divisors (4591).

3216401 is an equidigital number, since it uses as much as digits as its factorization.

3216401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4590.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3216401 is about 1793.4327419784. The cubic root of 3216401 is about 147.6125885567.

The spelling of 3216401 in words is "three million, two hundred sixteen thousand, four hundred one".