21143230314 has 16 divisors (see below), whose sum is σ = 42705139680. Its totient is φ = 6977963600.

The previous prime is 21143230291. The next prime is 21143230321. The reversal of 21143230314 is 41303234112.

It is a happy number.

It is a super-2 number, since 2×21143230314² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17444304 + ... + 17445515.

It is an arithmetic number, because the mean of its divisors is an integer number (2669071230).

Almost surely, 2^21143230314 is an apocalyptic number.

21143230314 is an abundant number, since it is smaller than the sum of its proper divisors (21561909366).

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

21143230314 is a wasteful number, since it uses less digits than its factorization.

21143230314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34889925.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21143230314 its reverse (41303234112), we get a palindrome (62446464426).

The spelling of 21143230314 in words is "twenty-one billion, one hundred forty-three million, two hundred thirty thousand, three hundred fourteen".