1304313213 has 24 divisors (see below), whose sum is σ = 2025406080. Its totient is φ = 744441600.

The previous prime is 1304313203. The next prime is 1304313221. The reversal of 1304313213 is 3123134031.

It is not a de Polignac number, because 1304313213 - 2⁶ = 1304313149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1304313213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304313203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131788 + ... + 141338.

It is an arithmetic number, because the mean of its divisors is an integer number (84391920).

Almost surely, 2^1304313213 is an apocalyptic number.

It is an amenable number.

1304313213 is a deficient number, since it is larger than the sum of its proper divisors (721092867).

1304313213 is an equidigital number, since it uses as much as digits as its factorization.

1304313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10497 (or 10490 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1304313213 is about 36115.2767260615. The cubic root of 1304313213 is about 1092.5985787987.

Adding to 1304313213 its reverse (3123134031), we get a palindrome (4427447244).

The spelling of 1304313213 in words is "one billion, three hundred four million, three hundred thirteen thousand, two hundred thirteen".