1340331323120 has 80 divisors (see below), whose sum is σ = 3158150722560. Its totient is φ = 528937773312.

The previous prime is 1340331323069. The next prime is 1340331323129. The reversal of 1340331323120 is 213231330431.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1340331323120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340331323129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8179109 + ... + 8341371.

It is an arithmetic number, because the mean of its divisors is an integer number (39476884032).

Almost surely, 2^{1340331323120} is an apocalyptic number.

1340331323120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340331323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579075361280).

1340331323120 is an abundant number, since it is smaller than the sum of its proper divisors (1817819399440).

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

1340331323120 is a wasteful number, since it uses less digits than its factorization.

1340331323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163662 (or 163656 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1340331323120 its reverse (213231330431), we get a palindrome (1553562653551).

The spelling of 1340331323120 in words is "one trillion, three hundred forty billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty".