1317394123 has 2 divisors, whose sum is σ = 1317394124. Its totient is φ = 1317394122.

The previous prime is 1317394103. The next prime is 1317394153. The reversal of 1317394123 is 3214937131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317394123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1317394103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658697061 + 658697062.

It is an arithmetic number, because the mean of its divisors is an integer number (658697062).

Almost surely, 2^1317394123 is an apocalyptic number.

1317394123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317394123 is an equidigital number, since it uses as much as digits as its factorization.

1317394123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 1317394123 is about 36295.9243304259. The cubic root of 1317394123 is about 1096.2389798349.

The spelling of 1317394123 in words is "one billion, three hundred seventeen million, three hundred ninety-four thousand, one hundred twenty-three".