21302023316 has 24 divisors (see below), whose sum is σ = 42624636096. Its totient is φ = 9125026560.

The previous prime is 21302023307. The next prime is 21302023339. The reversal of 21302023316 is 61332020312.

It is a junction number, because it is equal to n+sod(n) for n = 21302023291 and 21302023300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124526 + ... + 241061.

It is an arithmetic number, because the mean of its divisors is an integer number (1776026504).

Almost surely, 2^21302023316 is an apocalyptic number.

It is an amenable number.

21302023316 is an abundant number, since it is smaller than the sum of its proper divisors (21322612780).

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

21302023316 is a wasteful number, since it uses less digits than its factorization.

21302023316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367679 (or 367677 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21302023316 its reverse (61332020312), we get a palindrome (82634043628).

The spelling of 21302023316 in words is "twenty-one billion, three hundred two million, twenty-three thousand, three hundred sixteen".