21032310331 has 2 divisors, whose sum is σ = 21032310332.
Its totient is φ = 21032310330.
The previous prime is 21032310311. The next prime is 21032310373. The reversal of 21032310331 is 13301323012.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 21032310331 - 27 = 21032310203 is a prime.
It is a super-2 number, since 2×210323103312 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 21032310299 and 21032310308.
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, 10516155165 + 10516155166.
It is an arithmetic number, because the mean of its divisors is an integer number (10516155166).
Almost surely, 221032310331 is an apocalyptic number.
21032310331 is a deficient number, since it is larger than the sum of its proper divisors (1).
21032310331 is an equidigital number, since it uses as much as digits as its factorization.
21032310331 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 21032310331 its reverse (13301323012), we get a palindrome (34333633343).
The spelling of 21032310331 in words is "twenty-one billion, thirty-two million, three hundred ten thousand, three hundred thirty-one".