2223831661 has 2 divisors, whose sum is σ = 2223831662. Its totient is φ = 2223831660.

The previous prime is 2223831601. The next prime is 2223831713. The reversal of 2223831661 is 1661383222.

2223831661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275561225 + 948270436 = 35715^2 + 30794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223831661 - 2²⁹ = 1686960749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223831601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111915830 + 1111915831.

It is an arithmetic number, because the mean of its divisors is an integer number (1111915831).

Almost surely, 2^2223831661 is an apocalyptic number.

It is an amenable number.

2223831661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223831661 is an equidigital number, since it uses as much as digits as its factorization.

2223831661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 2223831661 is about 47157.5196654786. The cubic root of 2223831661 is about 1305.2708413549.

The spelling of 2223831661 in words is "two billion, two hundred twenty-three million, eight hundred thirty-one thousand, six hundred sixty-one".