21431402114 has 16 divisors (see below), whose sum is σ = 33724019520. Its totient is φ = 10200471120.

The previous prime is 21431402107. The next prime is 21431402117. The reversal of 21431402114 is 41120413412.

It is a self number, because there is not a number n which added to its sum of digits gives 21431402114.

It is not an unprimeable number, because it can be changed into a prime (21431402117) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2598044 + ... + 2606279.

It is an arithmetic number, because the mean of its divisors is an integer number (2107751220).

Almost surely, 2^21431402114 is an apocalyptic number.

21431402114 is a deficient number, since it is larger than the sum of its proper divisors (12292617406).

21431402114 is a wasteful number, since it uses less digits than its factorization.

21431402114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204425.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21431402114 its reverse (41120413412), we get a palindrome (62551815526).

The spelling of 21431402114 in words is "twenty-one billion, four hundred thirty-one million, four hundred two thousand, one hundred fourteen".