3311621 has 2 divisors, whose sum is σ = 3311622. Its totient is φ = 3311620.

The previous prime is 3311603. The next prime is 3311639. The reversal of 3311621 is 1261133.

It is a balanced prime because it is at equal distance from previous prime (3311603) and next prime (3311639).

It can be written as a sum of positive squares in only one way, i.e., 3290596 + 21025 = 1814^2 + 145^2 .

It is an emirp because it is prime and its reverse (1261133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3311621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3311621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3311641) 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 as a sum of consecutive naturals, namely, 1655810 + 1655811.

It is an arithmetic number, because the mean of its divisors is an integer number (1655811).

Almost surely, 2^3311621 is an apocalyptic number.

It is an amenable number.

3311621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3311621 is an equidigital number, since it uses as much as digits as its factorization.

3311621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 3311621 is about 1819.7859764269. The cubic root of 3311621 is about 149.0551122642.

Adding to 3311621 its reverse (1261133), we get a palindrome (4572754).

The spelling of 3311621 in words is "three million, three hundred eleven thousand, six hundred twenty-one".