331133312131 has 4 divisors (see below), whose sum is σ = 331134464232. Its totient is φ = 331132160032.

The previous prime is 331133312123. The next prime is 331133312141. The reversal of 331133312131 is 131213331133.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131213331133 = 10139 ⋅12941447.

It is a cyclic number.

It is not a de Polignac number, because 331133312131 - 2³ = 331133312123 is a prime.

It is a super-2 number, since 2×331133312131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331133312096 and 331133312105.

It is not an unprimeable number, because it can be changed into a prime (331133312101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248331 + ... + 850843.

It is an arithmetic number, because the mean of its divisors is an integer number (82783616058).

Almost surely, 2^331133312131 is an apocalyptic number.

331133312131 is a deficient number, since it is larger than the sum of its proper divisors (1152101).

331133312131 is an equidigital number, since it uses as much as digits as its factorization.

331133312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152100.

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

Adding to 331133312131 its reverse (131213331133), we get a palindrome (462346643264).

The spelling of 331133312131 in words is "three hundred thirty-one billion, one hundred thirty-three million, three hundred twelve thousand, one hundred thirty-one".