21313230334 has 8 divisors (see below), whose sum is σ = 34876195128. Its totient is φ = 9687831960.

The previous prime is 21313230283. The next prime is 21313230349. The reversal of 21313230334 is 43303231312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21313230299 and 21313230308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484391577 + ... + 484391620.

It is an arithmetic number, because the mean of its divisors is an integer number (4359524391).

Almost surely, 2^21313230334 is an apocalyptic number.

21313230334 is a deficient number, since it is larger than the sum of its proper divisors (13562964794).

21313230334 is a wasteful number, since it uses less digits than its factorization.

21313230334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968783210.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21313230334 its reverse (43303231312), we get a palindrome (64616461646).

The spelling of 21313230334 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty thousand, three hundred thirty-four".