1366400323 has 2 divisors, whose sum is σ = 1366400324. Its totient is φ = 1366400322.

The previous prime is 1366400303. The next prime is 1366400363. The reversal of 1366400323 is 3230046631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1366400323 - 2²⁹ = 829529411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1366400291 and 1366400300.

It is not a weakly prime, because it can be changed into another prime (1366400303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683200161 + 683200162.

It is an arithmetic number, because the mean of its divisors is an integer number (683200162).

Almost surely, 2^1366400323 is an apocalyptic number.

1366400323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366400323 is an equidigital number, since it uses as much as digits as its factorization.

1366400323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 1366400323 is about 36964.8525358887. The cubic root of 1366400323 is about 1109.6669517273. Note that the first 3 decimals are identical.

Adding to 1366400323 its reverse (3230046631), we get a palindrome (4596446954).

The spelling of 1366400323 in words is "one billion, three hundred sixty-six million, four hundred thousand, three hundred twenty-three".