21350343314 has 16 divisors (see below), whose sum is σ = 32379312600. Its totient is φ = 10557819264.

The previous prime is 21350343293. The next prime is 21350343317. The reversal of 21350343314 is 41334305312.

It can be written as a sum of positive squares in 4 ways, for example, as 20074639225 + 1275704089 = 141685^2 + 35717^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21350343317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71129 + ... + 218540.

Almost surely, 2^21350343314 is an apocalyptic number.

21350343314 is a deficient number, since it is larger than the sum of its proper divisors (11028969286).

21350343314 is a wasteful number, since it uses less digits than its factorization.

21350343314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290077.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 21350343314 its reverse (41334305312), we get a palindrome (62684648626).

The spelling of 21350343314 in words is "twenty-one billion, three hundred fifty million, three hundred forty-three thousand, three hundred fourteen".