131320331333 has 4 divisors (see below), whose sum is σ = 131324163168. Its totient is φ = 131316499500.

The previous prime is 131320331281. The next prime is 131320331347. The reversal of 131320331333 is 333133023131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131320331333 - 2¹⁴ = 131320314949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320331393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1864043 + ... + 1933208.

It is an arithmetic number, because the mean of its divisors is an integer number (32831040792).

Almost surely, 2^131320331333 is an apocalyptic number.

It is an amenable number.

131320331333 is a deficient number, since it is larger than the sum of its proper divisors (3831835).

131320331333 is an equidigital number, since it uses as much as digits as its factorization.

131320331333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831834.

The product of its (nonzero) digits is 4374, while the sum is 26.

Adding to 131320331333 its reverse (333133023131), we get a palindrome (464453354464).

The spelling of 131320331333 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred thirty-one thousand, three hundred thirty-three".