21323312302 has 8 divisors (see below), whose sum is σ = 31986624096. Its totient is φ = 10661104272.

The previous prime is 21323312293. The next prime is 21323312303. The reversal of 21323312302 is 20321332312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323312303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225823 + ... + 306010.

It is an arithmetic number, because the mean of its divisors is an integer number (3998328012).

Almost surely, 2^21323312302 is an apocalyptic number.

21323312302 is a deficient number, since it is larger than the sum of its proper divisors (10663311794).

21323312302 is a wasteful number, since it uses less digits than its factorization.

21323312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551882.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21323312302 its reverse (20321332312), we get a palindrome (41644644614).

The spelling of 21323312302 in words is "twenty-one billion, three hundred twenty-three million, three hundred twelve thousand, three hundred two".