21310330223 has 8 divisors (see below), whose sum is σ = 26228098848. Its totient is φ = 16860920544.

The previous prime is 21310330219. The next prime is 21310330241. The reversal of 21310330223 is 32203301312.

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

It is not a de Polignac number, because 21310330223 - 2² = 21310330219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21310330195 and 21310330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310330243) 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, 117089636 + ... + 117089817.

It is an arithmetic number, because the mean of its divisors is an integer number (3278512356).

Almost surely, 2^21310330223 is an apocalyptic number.

21310330223 is a deficient number, since it is larger than the sum of its proper divisors (4917768625).

21310330223 is a wasteful number, since it uses less digits than its factorization.

21310330223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234179473.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21310330223 its reverse (32203301312), we get a palindrome (53513631535).

The spelling of 21310330223 in words is "twenty-one billion, three hundred ten million, three hundred thirty thousand, two hundred twenty-three".