321111312013 has 4 divisors (see below), whose sum is σ = 321114207168. Its totient is φ = 321108416860.

The previous prime is 321111311981. The next prime is 321111312031. The reversal of 321111312013 is 310213111123.

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 not a de Polignac number, because 321111312013 - 2⁵ = 321111311981 is a prime.

It is a super-2 number, since 2×321111312013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321111312043) 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, 1274293 + ... + 1505338.

It is an arithmetic number, because the mean of its divisors is an integer number (80278551792).

Almost surely, 2^321111312013 is an apocalyptic number.

It is an amenable number.

321111312013 is a deficient number, since it is larger than the sum of its proper divisors (2895155).

321111312013 is a wasteful number, since it uses less digits than its factorization.

321111312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895154.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 321111312013 its reverse (310213111123), we get a palindrome (631324423136).

The spelling of 321111312013 in words is "three hundred twenty-one billion, one hundred eleven million, three hundred twelve thousand, thirteen".