321203133109 has 4 divisors (see below), whose sum is σ = 322229341516. Its totient is φ = 320176924704.

The previous prime is 321203133107. The next prime is 321203133131. The reversal of 321203133109 is 901331302123.

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 28140062500 + 293063070609 = 167750^2 + 541353^2 .

It is a cyclic number.

It is not a de Polignac number, because 321203133109 - 2¹ = 321203133107 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 (321203133107) 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, 513103734 + ... + 513104359.

It is an arithmetic number, because the mean of its divisors is an integer number (80557335379).

Almost surely, 2^321203133109 is an apocalyptic number.

It is an amenable number.

321203133109 is a deficient number, since it is larger than the sum of its proper divisors (1026208407).

321203133109 is a wasteful number, since it uses less digits than its factorization.

321203133109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026208406.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 321203133109 in words is "three hundred twenty-one billion, two hundred three million, one hundred thirty-three thousand, one hundred nine".