2123323131263 has 2 divisors, whose sum is σ = 2123323131264. Its totient is φ = 2123323131262.

The previous prime is 2123323131227. The next prime is 2123323131269. The reversal of 2123323131263 is 3621313233212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123323131263 - 2¹⁸ = 2123322869119 is a prime.

It is a super-2 number, since 2×2123323131263² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123323131269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061661565631 + 1061661565632.

It is an arithmetic number, because the mean of its divisors is an integer number (1061661565632).

Almost surely, 2^{2123323131263} is an apocalyptic number.

2123323131263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123323131263 is an equidigital number, since it uses as much as digits as its factorization.

2123323131263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 32.

Adding to 2123323131263 its reverse (3621313233212), we get a palindrome (5744636364475).

The spelling of 2123323131263 in words is "two trillion, one hundred twenty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred sixty-three".