1340424040313 has 4 divisors (see below), whose sum is σ = 1342596527220. Its totient is φ = 1338251553408.

The previous prime is 1340424040309. The next prime is 1340424040321. The reversal of 1340424040313 is 3130404240431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 772205077504 + 568218962809 = 878752^2 + 753803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340424040313 - 2² = 1340424040309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340424040913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086242528 + ... + 1086243761.

It is an arithmetic number, because the mean of its divisors is an integer number (335649131805).

Almost surely, 2^{1340424040313} is an apocalyptic number.

It is an amenable number.

1340424040313 is a deficient number, since it is larger than the sum of its proper divisors (2172486907).

1340424040313 is an equidigital number, since it uses as much as digits as its factorization.

1340424040313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172486906.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 1340424040313 its reverse (3130404240431), we get a palindrome (4470828280744).

The spelling of 1340424040313 in words is "one trillion, three hundred forty billion, four hundred twenty-four million, forty thousand, three hundred thirteen".