131303533 has 4 divisors (see below), whose sum is σ = 131351580. Its totient is φ = 131255488.

The previous prime is 131303519. The next prime is 131303551. The reversal of 131303533 is 335303131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335303131 = 23 ⋅14578397.

It can be written as a sum of positive squares in 2 ways, for example, as 66227044 + 65076489 = 8138^2 + 8067^2 .

It is a cyclic number.

It is not a de Polignac number, because 131303533 - 2¹³ = 131295341 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 (131303633) 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, 19660 + ... + 25477.

It is an arithmetic number, because the mean of its divisors is an integer number (32837895).

Almost surely, 2^131303533 is an apocalyptic number.

It is an amenable number.

131303533 is a deficient number, since it is larger than the sum of its proper divisors (48047).

131303533 is an equidigital number, since it uses as much as digits as its factorization.

131303533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48046.

The product of its (nonzero) digits is 1215, while the sum is 22.

The square root of 131303533 is about 11458.7753708675. The cubic root of 131303533 is about 508.2672620269.

Adding to 131303533 its reverse (335303131), we get a palindrome (466606664).

The spelling of 131303533 in words is "one hundred thirty-one million, three hundred three thousand, five hundred thirty-three".