21032310311 has 2 divisors, whose sum is σ = 21032310312.
Its totient is φ = 21032310310.
The previous prime is 21032310301. The next prime is 21032310331. The reversal of 21032310311 is 11301323012.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 21032310311 - 234 = 3852441127 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 21032310311.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21032310301) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516155155 + 10516155156.
It is an arithmetic number, because the mean of its divisors is an integer number (10516155156).
Almost surely, 221032310311 is an apocalyptic number.
21032310311 is a deficient number, since it is larger than the sum of its proper divisors (1).
21032310311 is an equidigital number, since it uses as much as digits as its factorization.
21032310311 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 108, while the sum is 17.
Adding to 21032310311 its reverse (11301323012), we get a palindrome (32333633323).
The spelling of 21032310311 in words is "twenty-one billion, thirty-two million, three hundred ten thousand, three hundred eleven".