331321133131 has 4 divisors (see below), whose sum is σ = 332304282232. Its totient is φ = 330337984032.

The previous prime is 331321133119. The next prime is 331321133141. The reversal of 331321133131 is 131331123133.

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

It is a cyclic number.

It is not a de Polignac number, because 331321133131 - 2⁹ = 331321132619 is a prime.

It is a super-3 number, since 3×331321133131³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331321133096 and 331321133105.

It is not an unprimeable number, because it can be changed into a prime (331321133141) 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, 491574045 + ... + 491574718.

It is an arithmetic number, because the mean of its divisors is an integer number (83076070558).

Almost surely, 2^331321133131 is an apocalyptic number.

331321133131 is a deficient number, since it is larger than the sum of its proper divisors (983149101).

331321133131 is an equidigital number, since it uses as much as digits as its factorization.

331321133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983149100.

The product of its digits is 1458, while the sum is 25.

Adding to 331321133131 its reverse (131331123133), we get a palindrome (462652256264).

The spelling of 331321133131 in words is "three hundred thirty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-one".