131340133 has 4 divisors (see below), whose sum is σ = 131633100. Its totient is φ = 131047168.

The previous prime is 131340109. The next prime is 131340151. The reversal of 131340133 is 331043131.

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 77141089 + 54199044 = 8783^2 + 7362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131340133 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 131340133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131344133) 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, 145810 + ... + 146707.

It is an arithmetic number, because the mean of its divisors is an integer number (32908275).

Almost surely, 2^131340133 is an apocalyptic number.

It is an amenable number.

131340133 is a deficient number, since it is larger than the sum of its proper divisors (292967).

131340133 is an equidigital number, since it uses as much as digits as its factorization.

131340133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292966.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 131340133 is about 11460.3722888918. The cubic root of 131340133 is about 508.3144830300.

Adding to 131340133 its reverse (331043131), we get a palindrome (462383264).

The spelling of 131340133 in words is "one hundred thirty-one million, three hundred forty thousand, one hundred thirty-three".