321312131211301 has 4 divisors (see below), whose sum is σ = 321312807559872. Its totient is φ = 321311454862732.

The previous prime is 321312131211277. The next prime is 321312131211329. The reversal of 321312131211301 is 103112131213123.

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-321312131211301 is a prime.

It is a super-2 number, since 2×321312131211301² (a number of 30 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 (321312131211341) 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, 337461181 + ... + 338411986.

It is an arithmetic number, because the mean of its divisors is an integer number (80328201889968).

Almost surely, 2^{321312131211301} is an apocalyptic number.

It is an amenable number.

321312131211301 is a deficient number, since it is larger than the sum of its proper divisors (676348571).

321312131211301 is an equidigital number, since it uses as much as digits as its factorization.

321312131211301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676348570.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 321312131211301 its reverse (103112131213123), we get a palindrome (424424262424424).

The spelling of 321312131211301 in words is "three hundred twenty-one trillion, three hundred twelve billion, one hundred thirty-one million, two hundred eleven thousand, three hundred one".