31728858614329 has 8 divisors (see below), whose sum is σ = 31815365218560. Its totient is φ = 31642366691376.

The previous prime is 31728858614263. The next prime is 31728858614443. The reversal of 31728858614329 is 92341685882713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31728858614329 - 2²¹ = 31728856517177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31728858615329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664899 + ... + 7993735.

It is an arithmetic number, because the mean of its divisors is an integer number (3976920652320).

Almost surely, 2^{31728858614329} is an apocalyptic number.

It is an amenable number.

31728858614329 is a deficient number, since it is larger than the sum of its proper divisors (86506604231).

31728858614329 is a wasteful number, since it uses less digits than its factorization.

31728858614329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340639.

The product of its digits is 139345920, while the sum is 67.

The spelling of 31728858614329 in words is "thirty-one trillion, seven hundred twenty-eight billion, eight hundred fifty-eight million, six hundred fourteen thousand, three hundred twenty-nine".