12320002320 has 80 divisors (see below), whose sum is σ = 38203304832. Its totient is φ = 3284362240.

The previous prime is 12320002307. The next prime is 12320002339. The reversal of 12320002320 is 2320002321.

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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12320002320.

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, 1214389 + ... + 1224491.

Almost surely, 2^12320002320 is an apocalyptic number.

12320002320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320002320 is an abundant number, since it is smaller than the sum of its proper divisors (25883302512).

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

12320002320 is a wasteful number, since it uses less digits than its factorization.

12320002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15200 (or 15194 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 12320002320 its reverse (2320002321), we get a palindrome (14640004641).

Subtracting from 12320002320 its reverse (2320002321), we obtain a palindrome (9999999999).

The spelling of 12320002320 in words is "twelve billion, three hundred twenty million, two thousand, three hundred twenty".