1345442303 has 4 divisors (see below), whose sum is σ = 1345528128. Its totient is φ = 1345356480.

The previous prime is 1345442249. The next prime is 1345442317. The reversal of 1345442303 is 3032445431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3032445431 = 17 ⋅178379143.

It is a cyclic number.

It is not a de Polignac number, because 1345442303 - 2²⁴ = 1328665087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345442333) 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 in 3 ways as a sum of consecutive naturals, for example, 11951 + ... + 53232.

It is an arithmetic number, because the mean of its divisors is an integer number (336382032).

Almost surely, 2^1345442303 is an apocalyptic number.

1345442303 is a deficient number, since it is larger than the sum of its proper divisors (85825).

1345442303 is an equidigital number, since it uses as much as digits as its factorization.

1345442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85824.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 1345442303 is about 36680.2713048854. The cubic root of 1345442303 is about 1103.9642917873.

Adding to 1345442303 its reverse (3032445431), we get a palindrome (4377887734).

The spelling of 1345442303 in words is "one billion, three hundred forty-five million, four hundred forty-two thousand, three hundred three".