21232310311 has 2 divisors, whose sum is σ = 21232310312. Its totient is φ = 21232310310.

The previous prime is 21232310291. The next prime is 21232310317. The reversal of 21232310311 is 11301323212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232310311 - 2¹⁷ = 21232179239 is a prime.

It is a super-2 number, since 2×21232310311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232310317) 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, 10616155155 + 10616155156.

It is an arithmetic number, because the mean of its divisors is an integer number (10616155156).

Almost surely, 2^21232310311 is an apocalyptic number.

21232310311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232310311 is an equidigital number, since it uses as much as digits as its factorization.

21232310311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21232310311 its reverse (11301323212), we get a palindrome (32533633523).

The spelling of 21232310311 in words is "twenty-one billion, two hundred thirty-two million, three hundred ten thousand, three hundred eleven".