21332030231 has 2 divisors, whose sum is σ = 21332030232. Its totient is φ = 21332030230.

The previous prime is 21332030183. The next prime is 21332030233. The reversal of 21332030231 is 13203023312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332030231 - 2¹⁴ = 21332013847 is a prime.

It is a super-2 number, since 2×21332030231² (a number of 21 digits) contains 22 as substring.

Together with 21332030233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332030233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666015115 + 10666015116.

It is an arithmetic number, because the mean of its divisors is an integer number (10666015116).

Almost surely, 2^21332030231 is an apocalyptic number.

21332030231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332030231 is an equidigital number, since it uses as much as digits as its factorization.

21332030231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21332030231 its reverse (13203023312), we get a palindrome (34535053543).

The spelling of 21332030231 in words is "twenty-one billion, three hundred thirty-two million, thirty thousand, two hundred thirty-one".