131331313033 has 4 divisors (see below), whose sum is σ = 131406749188. Its totient is φ = 131255876880.

The previous prime is 131331313027. The next prime is 131331313063. The reversal of 131331313033 is 330313133131.

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 3484304784 + 127847008249 = 59028^2 + 357557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131331313033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131331312989 and 131331313007.

It is not an unprimeable number, because it can be changed into a prime (131331313063) 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, 37715466 + ... + 37718947.

It is an arithmetic number, because the mean of its divisors is an integer number (32851687297).

Almost surely, 2^131331313033 is an apocalyptic number.

It is an amenable number.

131331313033 is a deficient number, since it is larger than the sum of its proper divisors (75436155).

131331313033 is an equidigital number, since it uses as much as digits as its factorization.

131331313033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75436154.

The product of its (nonzero) digits is 2187, while the sum is 25.

Adding to 131331313033 its reverse (330313133131), we get a palindrome (461644446164).

The spelling of 131331313033 in words is "one hundred thirty-one billion, three hundred thirty-one million, three hundred thirteen thousand, thirty-three".