129310019321 has 16 divisors (see below), whose sum is σ = 149322588288. Its totient is φ = 109683504000.

The previous prime is 129310019317. The next prime is 129310019339. The reversal of 129310019321 is 123910013921.

It is a happy number.

It is not a de Polignac number, because 129310019321 - 2² = 129310019317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129310019381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363166 + ... + 1454936.

It is an arithmetic number, because the mean of its divisors is an integer number (9332661768).

Almost surely, 2^129310019321 is an apocalyptic number.

It is an amenable number.

129310019321 is a deficient number, since it is larger than the sum of its proper divisors (20012568967).

129310019321 is a wasteful number, since it uses less digits than its factorization.

129310019321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93872.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 129310019321 in words is "one hundred twenty-nine billion, three hundred ten million, nineteen thousand, three hundred twenty-one".