321313013 has 12 divisors (see below), whose sum is σ = 383879328. Its totient is φ = 263433720.

The previous prime is 321313007. The next prime is 321313019. The reversal of 321313013 is 310313123.

It is an interprime number because it is at equal distance from previous prime (321313007) and next prime (321313019).

It is not a de Polignac number, because 321313013 - 2⁶ = 321312949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321312982 and 321313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39683 + ... + 47088.

It is an arithmetic number, because the mean of its divisors is an integer number (31989944).

Almost surely, 2^321313013 is an apocalyptic number.

It is an amenable number.

321313013 is a deficient number, since it is larger than the sum of its proper divisors (62566315).

321313013 is an equidigital number, since it uses as much as digits as its factorization.

321313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86824 (or 86801 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 321313013 is about 17925.2060797080. The cubic root of 321313013 is about 684.9246106670.

Adding to 321313013 its reverse (310313123), we get a palindrome (631626136).

The spelling of 321313013 in words is "three hundred twenty-one million, three hundred thirteen thousand, thirteen".