521342304225313 has 8 divisors (see below), whose sum is σ = 530434863316800. Its totient is φ = 512258286762288.

The previous prime is 521342304225287. The next prime is 521342304225343. The reversal of 521342304225313 is 313522403243125.

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 521342304225313 - 2³³ = 521333714290721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521342304225343) 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, 2135283981 + ... + 2135528122.

It is an arithmetic number, because the mean of its divisors is an integer number (66304357914600).

Almost surely, 2^{521342304225313} is an apocalyptic number.

It is an amenable number.

521342304225313 is a deficient number, since it is larger than the sum of its proper divisors (9092559091487).

521342304225313 is a wasteful number, since it uses less digits than its factorization.

521342304225313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270814231.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 521342304225313 its reverse (313522403243125), we get a palindrome (834864707468438).

The spelling of 521342304225313 in words is "five hundred twenty-one trillion, three hundred forty-two billion, three hundred four million, two hundred twenty-five thousand, three hundred thirteen".