321031023013 has 4 divisors (see below), whose sum is σ = 321170059980. Its totient is φ = 320891986048.

The previous prime is 321031023007. The next prime is 321031023029. The reversal of 321031023013 is 310320130123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97232959684 + 223798063329 = 311822^2 + 473073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321031023013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321031027013) 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, 69515020 + ... + 69519637.

It is an arithmetic number, because the mean of its divisors is an integer number (80292514995).

Almost surely, 2^321031023013 is an apocalyptic number.

It is an amenable number.

321031023013 is a deficient number, since it is larger than the sum of its proper divisors (139036967).

321031023013 is a wasteful number, since it uses less digits than its factorization.

321031023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139036966.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 321031023013 its reverse (310320130123), we get a palindrome (631351153136).

It can be divided in two parts, 3210310 and 23013, that added together give a palindrome (3233323).

The spelling of 321031023013 in words is "three hundred twenty-one billion, thirty-one million, twenty-three thousand, thirteen".