21300795931 has 2 divisors, whose sum is σ = 21300795932. Its totient is φ = 21300795930.

The previous prime is 21300795917. The next prime is 21300795941. The reversal of 21300795931 is 13959700312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21300795931 - 2⁹ = 21300795419 is a prime.

It is a super-2 number, since 2×21300795931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21300795941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650397965 + 10650397966.

It is an arithmetic number, because the mean of its divisors is an integer number (10650397966).

Almost surely, 2^21300795931 is an apocalyptic number.

21300795931 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300795931 is an equidigital number, since it uses as much as digits as its factorization.

21300795931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 40.

The spelling of 21300795931 in words is "twenty-one billion, three hundred million, seven hundred ninety-five thousand, nine hundred thirty-one".