1345052243 has 4 divisors (see below), whose sum is σ = 1345159200. Its totient is φ = 1344945288.

The previous prime is 1345052227. The next prime is 1345052263. The reversal of 1345052243 is 3422505431.

It is a happy number.

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: 3422505431 = 31 ⋅110403401.

It is a cyclic number.

It is not a de Polignac number, because 1345052243 - 2⁴ = 1345052227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345052263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31643 + ... + 60756.

It is an arithmetic number, because the mean of its divisors is an integer number (336289800).

Almost surely, 2^1345052243 is an apocalyptic number.

1345052243 is a deficient number, since it is larger than the sum of its proper divisors (106957).

1345052243 is an equidigital number, since it uses as much as digits as its factorization.

1345052243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106956.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1345052243 is about 36674.9538922682. The cubic root of 1345052243 is about 1103.8575972748.

Adding to 1345052243 its reverse (3422505431), we get a palindrome (4767557674).

The spelling of 1345052243 in words is "one billion, three hundred forty-five million, fifty-two thousand, two hundred forty-three".