320012342320 has 80 divisors (see below), whose sum is σ = 813282446592. Its totient is φ = 116136615680.

The previous prime is 320012342311. The next prime is 320012342381. The reversal of 320012342320 is 23243210023.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 320012342291 and 320012342300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81159 + ... + 804121.

Almost surely, 2^320012342320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320012342320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406641223296).

320012342320 is an abundant number, since it is smaller than the sum of its proper divisors (493270104272).

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

320012342320 is a wasteful number, since it uses less digits than its factorization.

320012342320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723490 (or 723484 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 320012342320 its reverse (23243210023), we get a palindrome (343255552343).

The spelling of 320012342320 in words is "three hundred twenty billion, twelve million, three hundred forty-two thousand, three hundred twenty".