1304313243 has 4 divisors (see below), whose sum is σ = 1739084328. Its totient is φ = 869542160.

The previous prime is 1304313221. The next prime is 1304313247. The reversal of 1304313243 is 3423134031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304313243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304313247) 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, 217385538 + ... + 217385543.

It is an arithmetic number, because the mean of its divisors is an integer number (434771082).

Almost surely, 2^1304313243 is an apocalyptic number.

1304313243 is a deficient number, since it is larger than the sum of its proper divisors (434771085).

1304313243 is an equidigital number, since it uses as much as digits as its factorization.

1304313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434771084.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1304313243 is about 36115.2771413982. The cubic root of 1304313243 is about 1092.5985871755.

Adding to 1304313243 its reverse (3423134031), we get a palindrome (4727447274).

The spelling of 1304313243 in words is "one billion, three hundred four million, three hundred thirteen thousand, two hundred forty-three".