1340104013 has 4 divisors (see below), whose sum is σ = 1340306748. Its totient is φ = 1339901280.

The previous prime is 1340104001. The next prime is 1340104021. The reversal of 1340104013 is 3104010431.

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 1216405129 + 123698884 = 34877^2 + 11122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340104013 - 2¹⁸ = 1339841869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340103982 and 1340104000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340104043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91106 + ... + 104787.

It is an arithmetic number, because the mean of its divisors is an integer number (335076687).

Almost surely, 2^1340104013 is an apocalyptic number.

It is an amenable number.

1340104013 is a deficient number, since it is larger than the sum of its proper divisors (202735).

1340104013 is an equidigital number, since it uses as much as digits as its factorization.

1340104013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202734.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1340104013 is about 36607.4311171926. The cubic root of 1340104013 is about 1102.5022959864.

Adding to 1340104013 its reverse (3104010431), we get a palindrome (4444114444).

The spelling of 1340104013 in words is "one billion, three hundred forty million, one hundred four thousand, thirteen".