2331861641 has 2 divisors, whose sum is σ = 2331861642. Its totient is φ = 2331861640.

The previous prime is 2331861607. The next prime is 2331861671. The reversal of 2331861641 is 1461681332.

2331861641 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., 1383468025 + 948393616 = 37195^2 + 30796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331861641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2331861671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165930820 + 1165930821.

It is an arithmetic number, because the mean of its divisors is an integer number (1165930821).

Almost surely, 2^2331861641 is an apocalyptic number.

It is an amenable number.

2331861641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331861641 is an equidigital number, since it uses as much as digits as its factorization.

2331861641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 2331861641 is about 48289.3532882767. The cubic root of 2331861641 is about 1326.0734893186.

The spelling of 2331861641 in words is "two billion, three hundred thirty-one million, eight hundred sixty-one thousand, six hundred forty-one".