1304533213 has 8 divisors (see below), whose sum is σ = 1319572800. Its totient is φ = 1289539488.

The previous prime is 1304533201. The next prime is 1304533249. The reversal of 1304533213 is 3123354031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304533213 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 (1304533283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47478 + ... + 69736.

It is an arithmetic number, because the mean of its divisors is an integer number (164946600).

Almost surely, 2^1304533213 is an apocalyptic number.

It is an amenable number.

1304533213 is a deficient number, since it is larger than the sum of its proper divisors (15039587).

1304533213 is a wasteful number, since it uses less digits than its factorization.

1304533213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22931.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1304533213 is about 36118.3224001337. The cubic root of 1304533213 is about 1092.6600052955.

Adding to 1304533213 its reverse (3123354031), we get a palindrome (4427887244).

The spelling of 1304533213 in words is "one billion, three hundred four million, five hundred thirty-three thousand, two hundred thirteen".