21313230348 has 12 divisors (see below), whose sum is σ = 49730870840. Its totient is φ = 7104410112.

The previous prime is 21313230283. The next prime is 21313230349. The reversal of 21313230348 is 84303231312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21313230348² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21313230349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 888051253 + ... + 888051276.

Almost surely, 2^21313230348 is an apocalyptic number.

It is an amenable number.

21313230348 is an abundant number, since it is smaller than the sum of its proper divisors (28417640492).

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

21313230348 is a wasteful number, since it uses less digits than its factorization.

21313230348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776102536 (or 1776102534 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 21313230348 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty thousand, three hundred forty-eight".