21403213314 has 32 divisors (see below), whose sum is σ = 48939426816. Its totient is φ = 6112979280.

The previous prime is 21403213297. The next prime is 21403213373. The reversal of 21403213314 is 41331230412.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25929 + ... + 208515.

It is an arithmetic number, because the mean of its divisors is an integer number (1529357088).

Almost surely, 2^21403213314 is an apocalyptic number.

21403213314 is an abundant number, since it is smaller than the sum of its proper divisors (27536213502).

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

21403213314 is a wasteful number, since it uses less digits than its factorization.

21403213314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185390.

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

Adding to 21403213314 its reverse (41331230412), we get a palindrome (62734443726).

The spelling of 21403213314 in words is "twenty-one billion, four hundred three million, two hundred thirteen thousand, three hundred fourteen".