1303240343 has 4 divisors (see below), whose sum is σ = 1371831960. Its totient is φ = 1234648728.

The previous prime is 1303240303. The next prime is 1303240361. The reversal of 1303240343 is 3430423031.

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

It is not a de Polignac number, because 1303240343 - 2¹² = 1303236247 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 (1303240303) 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, 34295780 + ... + 34295817.

It is an arithmetic number, because the mean of its divisors is an integer number (342957990).

Almost surely, 2^1303240343 is an apocalyptic number.

1303240343 is a deficient number, since it is larger than the sum of its proper divisors (68591617).

1303240343 is an equidigital number, since it uses as much as digits as its factorization.

1303240343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68591616.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 1303240343 is about 36100.4202607116. The cubic root of 1303240343 is about 1092.2989223009.

Adding to 1303240343 its reverse (3430423031), we get a palindrome (4733663374).

The spelling of 1303240343 in words is "one billion, three hundred three million, two hundred forty thousand, three hundred forty-three".