21423144314 has 32 divisors (see below), whose sum is σ = 38105557056. Its totient is φ = 8904712320.

The previous prime is 21423144313. The next prime is 21423144329. The reversal of 21423144314 is 41344132412.

It is a super-2 number, since 2×21423144314² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21423144313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319427 + ... + 380630.

It is an arithmetic number, because the mean of its divisors is an integer number (1190798658).

Almost surely, 2^21423144314 is an apocalyptic number.

21423144314 is a deficient number, since it is larger than the sum of its proper divisors (16682412742).

21423144314 is a wasteful number, since it uses less digits than its factorization.

21423144314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700190.

The product of its digits is 9216, while the sum is 29.

Adding to 21423144314 its reverse (41344132412), we get a palindrome (62767276726).

The spelling of 21423144314 in words is "twenty-one billion, four hundred twenty-three million, one hundred forty-four thousand, three hundred fourteen".