12320344220340 has 96 divisors (see below), whose sum is σ = 37195718789376. Its totient is φ = 3029015024640.

The previous prime is 12320344220339. The next prime is 12320344220341. The reversal of 12320344220340 is 4302244302321.

It is an interprime number because it is at equal distance from previous prime (12320344220339) and next prime (12320344220341).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12320344220298 and 12320344220307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320344220341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8954241 + ... + 10238120.

It is an arithmetic number, because the mean of its divisors is an integer number (387455404056).

Almost surely, 2^{12320344220340} is an apocalyptic number.

12320344220340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320344220340 is an abundant number, since it is smaller than the sum of its proper divisors (24875374569036).

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

12320344220340 is a wasteful number, since it uses less digits than its factorization.

12320344220340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19193209 (or 19193207 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 12320344220340 its reverse (4302244302321), we get a palindrome (16622588522661).

The spelling of 12320344220340 in words is "twelve trillion, three hundred twenty billion, three hundred forty-four million, two hundred twenty thousand, three hundred forty".