1340143313 has 8 divisors (see below), whose sum is σ = 1361660832. Its totient is φ = 1318670496.

The previous prime is 1340143309. The next prime is 1340143327. The reversal of 1340143313 is 3133410431.

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 1340143313 - 2² = 1340143309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340143513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52106 + ... + 73452.

It is an arithmetic number, because the mean of its divisors is an integer number (170207604).

Almost surely, 2^1340143313 is an apocalyptic number.

It is an amenable number.

1340143313 is a deficient number, since it is larger than the sum of its proper divisors (21517519).

1340143313 is an equidigital number, since it uses as much as digits as its factorization.

1340143313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22351.

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

The square root of 1340143313 is about 36607.9678895183. The cubic root of 1340143313 is about 1102.5130732386.

Adding to 1340143313 its reverse (3133410431), we get a palindrome (4473553744).

The spelling of 1340143313 in words is "one billion, three hundred forty million, one hundred forty-three thousand, three hundred thirteen".