21232303230 has 64 divisors (see below), whose sum is σ = 51448209408. Its totient is φ = 5607584640.

The previous prime is 21232303121. The next prime is 21232303231. The reversal of 21232303230 is 3230323212.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 21232303197 and 21232303206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232303231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2330985 + ... + 2340075.

It is an arithmetic number, because the mean of its divisors is an integer number (803878272).

Almost surely, 2^21232303230 is an apocalyptic number.

21232303230 is an abundant number, since it is smaller than the sum of its proper divisors (30215906178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232303230 is a wasteful number, since it uses less digits than its factorization.

21232303230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9841.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21232303230 its reverse (3230323212), we get a palindrome (24462626442).

The spelling of 21232303230 in words is "twenty-one billion, two hundred thirty-two million, three hundred three thousand, two hundred thirty".