1345005323 has 4 divisors (see below), whose sum is σ = 1349248560. Its totient is φ = 1340762088.

The previous prime is 1345005317. The next prime is 1345005329. The reversal of 1345005323 is 3235005431.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1345005317) and next prime (1345005329).

It is a cyclic number.

It is not a de Polignac number, because 1345005323 - 2¹² = 1345001227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345005292 and 1345005301.

It is not an unprimeable number, because it can be changed into a prime (1345005329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121143 + ... + 2121776.

It is an arithmetic number, because the mean of its divisors is an integer number (337312140).

Almost surely, 2^1345005323 is an apocalyptic number.

1345005323 is a deficient number, since it is larger than the sum of its proper divisors (4243237).

1345005323 is an equidigital number, since it uses as much as digits as its factorization.

1345005323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243236.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 1345005323 is about 36674.3142130838. The cubic root of 1345005323 is about 1103.8447616890.

The spelling of 1345005323 in words is "one billion, three hundred forty-five million, five thousand, three hundred twenty-three".