21313132230 has 32 divisors (see below), whose sum is σ = 55086250464. Its totient is φ = 5246309376.

The previous prime is 21313132223. The next prime is 21313132259. The reversal of 21313132230 is 3223131312.

It is a junction number, because it is equal to n+sod(n) for n = 21313132197 and 21313132206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27324139 + ... + 27324918.

It is an arithmetic number, because the mean of its divisors is an integer number (1721445327).

Almost surely, 2^21313132230 is an apocalyptic number.

21313132230 is an abundant number, since it is smaller than the sum of its proper divisors (33773118234).

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

21313132230 is a wasteful number, since it uses less digits than its factorization.

21313132230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54649080.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21313132230 its reverse (3223131312), we get a palindrome (24536263542).

The spelling of 21313132230 in words is "twenty-one billion, three hundred thirteen million, one hundred thirty-two thousand, two hundred thirty".