321140344513 has 8 divisors (see below), whose sum is σ = 323779680000. Its totient is φ = 318511717008.

The previous prime is 321140344477. The next prime is 321140344519. The reversal of 321140344513 is 315443041123.

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-321140344513 is a prime.

It is a super-2 number, since 2×321140344513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321140344519) 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, 2616763 + ... + 2736736.

It is an arithmetic number, because the mean of its divisors is an integer number (40472460000).

Almost surely, 2^321140344513 is an apocalyptic number.

It is an amenable number.

321140344513 is a deficient number, since it is larger than the sum of its proper divisors (2639335487).

321140344513 is a wasteful number, since it uses less digits than its factorization.

321140344513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353991.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 321140344513 its reverse (315443041123), we get a palindrome (636583385636).

The spelling of 321140344513 in words is "three hundred twenty-one billion, one hundred forty million, three hundred forty-four thousand, five hundred thirteen".