304321120213 has 4 divisors (see below), whose sum is σ = 331986676608. Its totient is φ = 276655563820.

The previous prime is 304321120153. The next prime is 304321120223. The reversal of 304321120213 is 312021123403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 304321120213 - 2³³ = 295731185621 is a prime.

It is a super-2 number, since 2×304321120213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304321120223) 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, 13832778181 + ... + 13832778202.

It is an arithmetic number, because the mean of its divisors is an integer number (82996669152).

Almost surely, 2^304321120213 is an apocalyptic number.

It is an amenable number.

304321120213 is a deficient number, since it is larger than the sum of its proper divisors (27665556395).

304321120213 is a wasteful number, since it uses less digits than its factorization.

304321120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27665556394.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 304321120213 its reverse (312021123403), we get a palindrome (616342243616).

The spelling of 304321120213 in words is "three hundred four billion, three hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".