12340312320 has 144 divisors (see below), whose sum is σ = 45042238080. Its totient is φ = 2820636672.

The previous prime is 12340312279. The next prime is 12340312331. The reversal of 12340312320 is 2321304321.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 202665 + ... + 256424.

It is an arithmetic number, because the mean of its divisors is an integer number (312793320).

Almost surely, 2^12340312320 is an apocalyptic number.

12340312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12340312320 is an abundant number, since it is smaller than the sum of its proper divisors (32701925760).

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

12340312320 is an equidigital number, since it uses as much as digits as its factorization.

12340312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459120 (or 459106 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12340312320 its reverse (2321304321), we get a palindrome (14661616641).

The spelling of 12340312320 in words is "twelve billion, three hundred forty million, three hundred twelve thousand, three hundred twenty".