1340317049 has 2 divisors, whose sum is σ = 1340317050. Its totient is φ = 1340317048.

The previous prime is 1340317037. The next prime is 1340317051. The reversal of 1340317049 is 9407130431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316238400 + 24078649 = 36280^2 + 4907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340317049 - 2⁸ = 1340316793 is a prime.

Together with 1340317051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1340317079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670158524 + 670158525.

It is an arithmetic number, because the mean of its divisors is an integer number (670158525).

Almost surely, 2^1340317049 is an apocalyptic number.

It is an amenable number.

1340317049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340317049 is an equidigital number, since it uses as much as digits as its factorization.

1340317049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1340317049 is about 36610.3407386492. The cubic root of 1340317049 is about 1102.5607143958.

The spelling of 1340317049 in words is "one billion, three hundred forty million, three hundred seventeen thousand, forty-nine".