1366042313 has 2 divisors, whose sum is σ = 1366042314. Its totient is φ = 1366042312.

The previous prime is 1366042283. The next prime is 1366042393. The reversal of 1366042313 is 3132406631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030859449 + 335182864 = 32107^2 + 18308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366042313 is a prime.

It is a super-3 number, since 3×1366042313³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1366042393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683021156 + 683021157.

It is an arithmetic number, because the mean of its divisors is an integer number (683021157).

Almost surely, 2^1366042313 is an apocalyptic number.

It is an amenable number.

1366042313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366042313 is an equidigital number, since it uses as much as digits as its factorization.

1366042313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1366042313 is about 36960.0096455615. The cubic root of 1366042313 is about 1109.5700287977.

Adding to 1366042313 its reverse (3132406631), we get a palindrome (4498448944).

The spelling of 1366042313 in words is "one billion, three hundred sixty-six million, forty-two thousand, three hundred thirteen".