21032310223 has 8 divisors (see below), whose sum is σ = 22367612592. Its totient is φ = 19707908736.

The previous prime is 21032310203. The next prime is 21032310227. The reversal of 21032310223 is 32201323012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21032310223 - 2¹⁷ = 21032179151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21032310223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032310227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721240 + ... + 2728957.

It is an arithmetic number, because the mean of its divisors is an integer number (2795951574).

Almost surely, 2^21032310223 is an apocalyptic number.

21032310223 is a deficient number, since it is larger than the sum of its proper divisors (1335302369).

21032310223 is a wasteful number, since it uses less digits than its factorization.

21032310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450441.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21032310223 its reverse (32201323012), we get a palindrome (53233633235).

The spelling of 21032310223 in words is "twenty-one billion, thirty-two million, three hundred ten thousand, two hundred twenty-three".