21230322309 has 24 divisors (see below), whose sum is σ = 35526983232. Its totient is φ = 11965423680.

The previous prime is 21230322301. The next prime is 21230322343. The reversal of 21230322309 is 90322303212.

21230322309 is a `hidden beast` number, since 2 + 1 + 2 + 30 + 322 + 309 = 666.

It is not a de Polignac number, because 21230322309 - 2³ = 21230322301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230322301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2303547 + ... + 2312744.

It is an arithmetic number, because the mean of its divisors is an integer number (1480290968).

Almost surely, 2^21230322309 is an apocalyptic number.

It is an amenable number.

21230322309 is a deficient number, since it is larger than the sum of its proper divisors (14296660923).

21230322309 is a wasteful number, since it uses less digits than its factorization.

21230322309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616377 (or 4616374 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 21230322309 in words is "twenty-one billion, two hundred thirty million, three hundred twenty-two thousand, three hundred nine".