321000103213 has 4 divisors (see below), whose sum is σ = 327056708988. Its totient is φ = 314943497440.

The previous prime is 321000103211. The next prime is 321000103231. The reversal of 321000103213 is 312301000123.

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 238287493609 + 82712609604 = 488147^2 + 287598^2 .

It is a cyclic number.

It is not a de Polignac number, because 321000103213 - 2¹ = 321000103211 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 (321000103211) 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, 3028302808 + ... + 3028302913.

It is an arithmetic number, because the mean of its divisors is an integer number (81764177247).

Almost surely, 2^321000103213 is an apocalyptic number.

It is an amenable number.

321000103213 is a deficient number, since it is larger than the sum of its proper divisors (6056605775).

321000103213 is an equidigital number, since it uses as much as digits as its factorization.

321000103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6056605774.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 321000103213 its reverse (312301000123), we get a palindrome (633301103336).

The spelling of 321000103213 in words is "three hundred twenty-one billion, one hundred three thousand, two hundred thirteen".