21313230332 has 24 divisors (see below), whose sum is σ = 37365266400. Its totient is φ = 10637462016.

The previous prime is 21313230283. The next prime is 21313230349. The reversal of 21313230332 is 23303231312.

It is a junction number, because it is equal to n+sod(n) for n = 21313230298 and 21313230307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7854608 + ... + 7857320.

It is an arithmetic number, because the mean of its divisors is an integer number (1556886100).

Almost surely, 2^21313230332 is an apocalyptic number.

It is an amenable number.

21313230332 is a deficient number, since it is larger than the sum of its proper divisors (16052036068).

21313230332 is a wasteful number, since it uses less digits than its factorization.

21313230332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5523 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21313230332 its reverse (23303231312), we get a palindrome (44616461644).

The spelling of 21313230332 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty thousand, three hundred thirty-two".