2120340863 has 2 divisors, whose sum is σ = 2120340864. Its totient is φ = 2120340862.

The previous prime is 2120340839. The next prime is 2120340869. The reversal of 2120340863 is 3680430212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120340863 - 2¹⁰ = 2120339839 is a prime.

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 (2120340869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060170431 + 1060170432.

It is an arithmetic number, because the mean of its divisors is an integer number (1060170432).

Almost surely, 2^2120340863 is an apocalyptic number.

2120340863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120340863 is an equidigital number, since it uses as much as digits as its factorization.

2120340863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2120340863 is about 46047.1591197546. The cubic root of 2120340863 is about 1284.7005036141.

The spelling of 2120340863 in words is "two billion, one hundred twenty million, three hundred forty thousand, eight hundred sixty-three".