319797128322 has 128 divisors (see below), whose sum is σ = 817617369600. Its totient is φ = 90760255488.

The previous prime is 319797128309. The next prime is 319797128323. The reversal of 319797128322 is 223821797913.

It is a happy number.

319797128322 is a `hidden beast` number, since 3 + 197 + 9 + 7 + 128 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (319797128323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139222678 + ... + 139224974.

It is an arithmetic number, because the mean of its divisors is an integer number (6387635700).

Almost surely, 2^319797128322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 319797128322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408808684800).

319797128322 is an abundant number, since it is smaller than the sum of its proper divisors (497820241278).

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

319797128322 is a wasteful number, since it uses less digits than its factorization.

319797128322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617 (or 4611 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 319797128322 in words is "three hundred nineteen billion, seven hundred ninety-seven million, one hundred twenty-eight thousand, three hundred twenty-two".