21302312230 has 32 divisors (see below), whose sum is σ = 41543894304. Its totient is φ = 7833186816.

The previous prime is 21302312221. The next prime is 21302312279. The reversal of 21302312230 is 3221320312.

It is a super-3 number, since 3×21302312230³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21302312198 and 21302312207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449757 + ... + 1464376.

It is an arithmetic number, because the mean of its divisors is an integer number (1298246697).

Almost surely, 2^21302312230 is an apocalyptic number.

21302312230 is a deficient number, since it is larger than the sum of its proper divisors (20241582074).

21302312230 is a wasteful number, since it uses less digits than its factorization.

21302312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914200.

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

Adding to 21302312230 its reverse (3221320312), we get a palindrome (24523632542).

The spelling of 21302312230 in words is "twenty-one billion, three hundred two million, three hundred twelve thousand, two hundred thirty".