1340136313 has 8 divisors (see below), whose sum is σ = 1387701000. Its totient is φ = 1292661888.

The previous prime is 1340136283. The next prime is 1340136319. The reversal of 1340136313 is 3136310431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 636401529 + 703734784 = 25227^2 + 26528^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340136313 - 2¹⁷ = 1340005241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340136319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8395 + ... + 52447.

It is an arithmetic number, because the mean of its divisors is an integer number (173462625).

Almost surely, 2^1340136313 is an apocalyptic number.

It is an amenable number.

1340136313 is a deficient number, since it is larger than the sum of its proper divisors (47564687).

1340136313 is a wasteful number, since it uses less digits than its factorization.

1340136313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45131.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1340136313 is about 36607.8722817921. The cubic root of 1340136313 is about 1102.5111536417.

Adding to 1340136313 its reverse (3136310431), we get a palindrome (4476446744).

The spelling of 1340136313 in words is "one billion, three hundred forty million, one hundred thirty-six thousand, three hundred thirteen".