21340013231302 has 16 divisors (see below), whose sum is σ = 32479446308400. Its totient is φ = 10513809804672.

The previous prime is 21340013231297. The next prime is 21340013231311. The reversal of 21340013231302 is 20313231004312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69515328 + ... + 69821635.

It is an arithmetic number, because the mean of its divisors is an integer number (2029965394275).

Almost surely, 2^{21340013231302} is an apocalyptic number.

21340013231302 is a deficient number, since it is larger than the sum of its proper divisors (11139433077098).

21340013231302 is a wasteful number, since it uses less digits than its factorization.

21340013231302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139338087.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21340013231302 its reverse (20313231004312), we get a palindrome (41653244235614).

The spelling of 21340013231302 in words is "twenty-one trillion, three hundred forty billion, thirteen million, two hundred thirty-one thousand, three hundred two".