321051320013 has 16 divisors (see below), whose sum is σ = 430062384960. Its totient is φ = 213037905024.

The previous prime is 321051319993. The next prime is 321051320033. The reversal of 321051320013 is 310023150123.

It is an interprime number because it is at equal distance from previous prime (321051319993) and next prime (321051320033).

It is not a de Polignac number, because 321051320013 - 2¹⁸ = 321051057869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321051320033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1867170 + ... + 2031852.

It is an arithmetic number, because the mean of its divisors is an integer number (26878899060).

Almost surely, 2^321051320013 is an apocalyptic number.

It is an amenable number.

321051320013 is a deficient number, since it is larger than the sum of its proper divisors (109011064947).

321051320013 is a wasteful number, since it uses less digits than its factorization.

321051320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167708.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 321051320013 its reverse (310023150123), we get a palindrome (631074470136).

The spelling of 321051320013 in words is "three hundred twenty-one billion, fifty-one million, three hundred twenty thousand, thirteen".