131331133 has 4 divisors (see below), whose sum is σ = 132212700. Its totient is φ = 130449568.

The previous prime is 131331119. The next prime is 131331139. The reversal of 131331133 is 331133131.

It is a happy number.

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 16990884 + 114340249 = 4122^2 + 10693^2 .

It is a cyclic number.

It is not a de Polignac number, because 131331133 - 2¹³ = 131322941 is a prime.

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 131331133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131331139) 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, 440560 + ... + 440857.

It is an arithmetic number, because the mean of its divisors is an integer number (33053175).

Almost surely, 2^131331133 is an apocalyptic number.

It is an amenable number.

131331133 is a deficient number, since it is larger than the sum of its proper divisors (881567).

131331133 is an equidigital number, since it uses as much as digits as its factorization.

131331133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881566.

The product of its digits is 243, while the sum is 19.

The square root of 131331133 is about 11459.9796247637. The cubic root of 131331133 is about 508.3028721214.

Adding to 131331133 its reverse (331133131), we get a palindrome (462464264).

The spelling of 131331133 in words is "one hundred thirty-one million, three hundred thirty-one thousand, one hundred thirty-three".