3112621 has 2 divisors, whose sum is σ = 3112622. Its totient is φ = 3112620.

The previous prime is 3112609. The next prime is 3112639. The reversal of 3112621 is 1262113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 171396 = 1715^2 + 414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112621 is a prime.

3112621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3112595 and 3112604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3112661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556310 + 1556311.

It is an arithmetic number, because the mean of its divisors is an integer number (1556311).

Almost surely, 2^3112621 is an apocalyptic number.

It is an amenable number.

3112621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3112621 is an equidigital number, since it uses as much as digits as its factorization.

3112621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 16.

The square root of 3112621 is about 1764.2621687266. The cubic root of 3112621 is about 146.0075838933.

Adding to 3112621 its reverse (1262113), we get a palindrome (4374734).

The spelling of 3112621 in words is "three million, one hundred twelve thousand, six hundred twenty-one".