320128931023 has 8 divisors (see below), whose sum is σ = 357353225856. Its totient is φ = 284258247000.

The previous prime is 320128931011. The next prime is 320128931063. The reversal of 320128931023 is 320139821023.

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 320128931023 - 2⁵ = 320128930991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320128931023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320128931063) 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, 338402203 + ... + 338403148.

It is an arithmetic number, because the mean of its divisors is an integer number (44669153232).

Almost surely, 2^320128931023 is an apocalyptic number.

320128931023 is a deficient number, since it is larger than the sum of its proper divisors (37224294833).

320128931023 is a wasteful number, since it uses less digits than its factorization.

320128931023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676805405.

The product of its (nonzero) digits is 15552, while the sum is 34.

Subtracting 320128931023 from its reverse (320139821023), we obtain a square (10890000 = 3300²).

The spelling of 320128931023 in words is "three hundred twenty billion, one hundred twenty-eight million, nine hundred thirty-one thousand, twenty-three".