21302311030 has 64 divisors (see below), whose sum is σ = 51483091968. Its totient is φ = 6128933760.

The previous prime is 21302311027. The next prime is 21302311049. The reversal of 21302311030 is 3011320312.

It is a junction number, because it is equal to n+sod(n) for n = 21302310995 and 21302311013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1054042 + ... + 1074061.

It is an arithmetic number, because the mean of its divisors is an integer number (804423312).

Almost surely, 2^21302311030 is an apocalyptic number.

21302311030 is an abundant number, since it is smaller than the sum of its proper divisors (30180780938).

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

21302311030 is a wasteful number, since it uses less digits than its factorization.

21302311030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128141.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21302311030 its reverse (3011320312), we get a palindrome (24313631342).

The spelling of 21302311030 in words is "twenty-one billion, three hundred two million, three hundred eleven thousand, thirty".