331335221131 has 4 divisors (see below), whose sum is σ = 348773917000. Its totient is φ = 313896525264.

The previous prime is 331335221083. The next prime is 331335221221. The reversal of 331335221131 is 131122533133.

It is a happy number.

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 331335221131 - 2¹³ = 331335212939 is a prime.

It is a super-3 number, since 3×331335221131³ (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 self number, because there is not a number n which added to its sum of digits gives 331335221131.

It is not an unprimeable number, because it can be changed into a prime (331335224131) 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, 8719347906 + ... + 8719347943.

It is an arithmetic number, because the mean of its divisors is an integer number (87193479250).

Almost surely, 2^331335221131 is an apocalyptic number.

331335221131 is a deficient number, since it is larger than the sum of its proper divisors (17438695869).

331335221131 is a wasteful number, since it uses less digits than its factorization.

331335221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17438695868.

The product of its digits is 4860, while the sum is 28.

Adding to 331335221131 its reverse (131122533133), we get a palindrome (462457754264).

The spelling of 331335221131 in words is "three hundred thirty-one billion, three hundred thirty-five million, two hundred twenty-one thousand, one hundred thirty-one".