21350143230 has 32 divisors (see below), whose sum is σ = 55181909664. Its totient is φ = 5255419776.

The previous prime is 21350143211. The next prime is 21350143247. The reversal of 21350143230 is 3234105312.

It is a self number, because there is not a number n which added to its sum of digits gives 21350143230.

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, 27371589 + ... + 27372368.

It is an arithmetic number, because the mean of its divisors is an integer number (1724434677).

Almost surely, 2^21350143230 is an apocalyptic number.

21350143230 is an abundant number, since it is smaller than the sum of its proper divisors (33831766434).

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

21350143230 is a wasteful number, since it uses less digits than its factorization.

21350143230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54743980.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 21350143230 its reverse (3234105312), we get a palindrome (24584248542).

The spelling of 21350143230 in words is "twenty-one billion, three hundred fifty million, one hundred forty-three thousand, two hundred thirty".