513301421351321 has 4 divisors (see below), whose sum is σ = 513301688674512. Its totient is φ = 513301154028132.

The previous prime is 513301421351311. The next prime is 513301421351423. The reversal of 513301421351321 is 123153124103315.

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 a de Polignac number, because none of the positive numbers 2^k-513301421351321 is a prime.

It is a super-3 number, since 3×513301421351321³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513301421351311) 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, 130760375 + ... + 134628668.

It is an arithmetic number, because the mean of its divisors is an integer number (128325422168628).

Almost surely, 2^{513301421351321} is an apocalyptic number.

It is an amenable number.

513301421351321 is a deficient number, since it is larger than the sum of its proper divisors (267323191).

513301421351321 is a wasteful number, since it uses less digits than its factorization.

513301421351321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267323190.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 513301421351321 its reverse (123153124103315), we get a palindrome (636454545454636).

The spelling of 513301421351321 in words is "five hundred thirteen trillion, three hundred one billion, four hundred twenty-one million, three hundred fifty-one thousand, three hundred twenty-one".