1240343331344 has 160 divisors (see below), whose sum is σ = 2860948387584. Its totient is φ = 515087400960.

The previous prime is 1240343331287. The next prime is 1240343331431. The reversal of 1240343331344 is 4431333430421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227959664 + ... + 227965104.

Almost surely, 2^{1240343331344} 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 1240343331344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430474193792).

1240343331344 is an abundant number, since it is smaller than the sum of its proper divisors (1620605056240).

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

1240343331344 is a wasteful number, since it uses less digits than its factorization.

1240343331344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305 (or 8299 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 1240343331344 its reverse (4431333430421), we get a palindrome (5671676761765).

The spelling of 1240343331344 in words is "one trillion, two hundred forty billion, three hundred forty-three million, three hundred thirty-one thousand, three hundred forty-four".