1345636223 has 2 divisors, whose sum is σ = 1345636224. Its totient is φ = 1345636222.

The previous prime is 1345636219. The next prime is 1345636249. The reversal of 1345636223 is 3226365431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345636223 - 2² = 1345636219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345636823) 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, 672818111 + 672818112.

It is an arithmetic number, because the mean of its divisors is an integer number (672818112).

Almost surely, 2^1345636223 is an apocalyptic number.

1345636223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345636223 is an equidigital number, since it uses as much as digits as its factorization.

1345636223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 35.

The square root of 1345636223 is about 36682.9145924911. The cubic root of 1345636223 is about 1104.0173277469.

The spelling of 1345636223 in words is "one billion, three hundred forty-five million, six hundred thirty-six thousand, two hundred twenty-three".