1240343331343 has 16 divisors (see below), whose sum is σ = 1286626572000. Its totient is φ = 1194734448000.

The previous prime is 1240343331287. The next prime is 1240343331431. The reversal of 1240343331343 is 3431333430421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240343331343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240343331299 and 1240343331308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240343331043) 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, 50104533 + ... + 50129281.

It is an arithmetic number, because the mean of its divisors is an integer number (80414160750).

Almost surely, 2^{1240343331343} is an apocalyptic number.

1240343331343 is a deficient number, since it is larger than the sum of its proper divisors (46283240657).

1240343331343 is a wasteful number, since it uses less digits than its factorization.

1240343331343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38298.

The product of its (nonzero) digits is 93312, while the sum is 34.

Adding to 1240343331343 its reverse (3431333430421), we get a palindrome (4671676761764).

The spelling of 1240343331343 in words is "one trillion, two hundred forty billion, three hundred forty-three million, three hundred thirty-one thousand, three hundred forty-three".