3112661 has 2 divisors, whose sum is σ = 3112662. Its totient is φ = 3112660.

The previous prime is 3112639. The next prime is 3112667. The reversal of 3112661 is 1662113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2788900 + 323761 = 1670^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 3112661 - 2¹⁴ = 3096277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3112667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556330 + 1556331.

It is an arithmetic number, because the mean of its divisors is an integer number (1556331).

Almost surely, 2^3112661 is an apocalyptic number.

It is an amenable number.

3112661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3112661 is an equidigital number, since it uses as much as digits as its factorization.

3112661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

The square root of 3112661 is about 1764.2735048739. The cubic root of 3112661 is about 146.0082093339.

Adding to 3112661 its reverse (1662113), we get a palindrome (4774774).

It can be divided in two parts, 3112 and 661, that added together give a palindrome (3773).

The spelling of 3112661 in words is "three million, one hundred twelve thousand, six hundred sixty-one".