21310102434 has 16 divisors (see below), whose sum is σ = 42645761280. Its totient is φ = 7099108080.

The previous prime is 21310102421. The next prime is 21310102481. The reversal of 21310102434 is 43420101312.

It is a self number, because there is not a number n which added to its sum of digits gives 21310102434.

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 7 ways as a sum of consecutive naturals, for example, 1054002 + ... + 1074029.

It is an arithmetic number, because the mean of its divisors is an integer number (2665360080).

Almost surely, 2^21310102434 is an apocalyptic number.

21310102434 is an abundant number, since it is smaller than the sum of its proper divisors (21335658846).

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

21310102434 is a wasteful number, since it uses less digits than its factorization.

21310102434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129705.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21310102434 its reverse (43420101312), we get a palindrome (64730203746).

The spelling of 21310102434 in words is "twenty-one billion, three hundred ten million, one hundred two thousand, four hundred thirty-four".