21421431314 has 8 divisors (see below), whose sum is σ = 32147549568. Its totient is φ = 10705581460.

The previous prime is 21421431289. The next prime is 21421431319. The reversal of 21421431314 is 41313412412.

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

It is not an unprimeable number, because it can be changed into a prime (21421431319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561882 + ... + 2570229.

It is an arithmetic number, because the mean of its divisors is an integer number (4018443696).

Almost surely, 2^21421431314 is an apocalyptic number.

21421431314 is a deficient number, since it is larger than the sum of its proper divisors (10726118254).

21421431314 is a wasteful number, since it uses less digits than its factorization.

21421431314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134200.

The product of its digits is 2304, while the sum is 26.

Adding to 21421431314 its reverse (41313412412), we get a palindrome (62734843726).

The spelling of 21421431314 in words is "twenty-one billion, four hundred twenty-one million, four hundred thirty-one thousand, three hundred fourteen".