305513213 has 8 divisors (see below), whose sum is σ = 310262400. Its totient is φ = 300776560.

The previous prime is 305513203. The next prime is 305513227. The reversal of 305513213 is 312315503.

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

It is a cyclic number.

It is not a de Polignac number, because 305513213 - 2⁶ = 305513149 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 (305513203) 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, 53888 + ... + 59286.

It is an arithmetic number, because the mean of its divisors is an integer number (38782800).

Almost surely, 2^305513213 is an apocalyptic number.

It is an amenable number.

305513213 is a deficient number, since it is larger than the sum of its proper divisors (4749187).

305513213 is an equidigital number, since it uses as much as digits as its factorization.

305513213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 305513213 is about 17478.9362662606. The cubic root of 305513213 is about 673.5088899216.

Adding to 305513213 its reverse (312315503), we get a palindrome (617828716).

The spelling of 305513213 in words is "three hundred five million, five hundred thirteen thousand, two hundred thirteen".