331201330321 has 4 divisors (see below), whose sum is σ = 332622795492. Its totient is φ = 329779865152.

The previous prime is 331201330267. The next prime is 331201330367. The reversal of 331201330321 is 123033102133.

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 211748145921 + 119453184400 = 460161^2 + 345620^2 .

It is a cyclic number.

It is not a de Polignac number, because 331201330321 - 2⁷ = 331201330193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331201330292 and 331201330301.

It is not an unprimeable number, because it can be changed into a prime (331201330381) 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, 710732236 + ... + 710732701.

It is an arithmetic number, because the mean of its divisors is an integer number (83155698873).

Almost surely, 2^331201330321 is an apocalyptic number.

It is an amenable number.

331201330321 is a deficient number, since it is larger than the sum of its proper divisors (1421465171).

331201330321 is a wasteful number, since it uses less digits than its factorization.

331201330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421465170.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 331201330321 its reverse (123033102133), we get a palindrome (454234432454).

The spelling of 331201330321 in words is "three hundred thirty-one billion, two hundred one million, three hundred thirty thousand, three hundred twenty-one".