2023323003661 has 2 divisors, whose sum is σ = 2023323003662. Its totient is φ = 2023323003660.

The previous prime is 2023323003649. The next prime is 2023323003679. The reversal of 2023323003661 is 1663003233202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2023321329225 + 1674436 = 1422435^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023323003661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2023323003601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011661501830 + 1011661501831.

It is an arithmetic number, because the mean of its divisors is an integer number (1011661501831).

Almost surely, 2^{2023323003661} is an apocalyptic number.

It is an amenable number.

2023323003661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023323003661 is an equidigital number, since it uses as much as digits as its factorization.

2023323003661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 2023323003661 its reverse (1663003233202), we get a palindrome (3686326236863).

The spelling of 2023323003661 in words is "two trillion, twenty-three billion, three hundred twenty-three million, three thousand, six hundred sixty-one".