2123946311 has 2 divisors, whose sum is σ = 2123946312. Its totient is φ = 2123946310.

The previous prime is 2123946301. The next prime is 2123946313. The reversal of 2123946311 is 1136493212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123946311 - 2¹⁰ = 2123945287 is a prime.

It is a super-2 number, since 2×2123946311² = 9022295864021017442, which contains 22 as substring.

Together with 2123946313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123946313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061973155 + 1061973156.

It is an arithmetic number, because the mean of its divisors is an integer number (1061973156).

Almost surely, 2^2123946311 is an apocalyptic number.

2123946311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123946311 is an equidigital number, since it uses as much as digits as its factorization.

2123946311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 2123946311 is about 46086.2920074939. The cubic root of 2123946311 is about 1285.4282636380.

The spelling of 2123946311 in words is "two billion, one hundred twenty-three million, nine hundred forty-six thousand, three hundred eleven".