1340413313 has 4 divisors (see below), whose sum is σ = 1340560320. Its totient is φ = 1340266308.

The previous prime is 1340413307. The next prime is 1340413337. The reversal of 1340413313 is 3133140431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3133140431 = 23 ⋅136223497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340413313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340412313) 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, 58853 + ... + 78386.

It is an arithmetic number, because the mean of its divisors is an integer number (335140080).

Almost surely, 2^1340413313 is an apocalyptic number.

It is an amenable number.

1340413313 is a deficient number, since it is larger than the sum of its proper divisors (147007).

1340413313 is an equidigital number, since it uses as much as digits as its factorization.

1340413313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147006.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1340413313 is about 36611.6554255609. The cubic root of 1340413313 is about 1102.5871097335.

Adding to 1340413313 its reverse (3133140431), we get a palindrome (4473553744).

The spelling of 1340413313 in words is "one billion, three hundred forty million, four hundred thirteen thousand, three hundred thirteen".