131442533 has 4 divisors (see below), whose sum is σ = 131519520. Its totient is φ = 131365548.

The previous prime is 131442517. The next prime is 131442583. The reversal of 131442533 is 335244131.

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 131442533 - 2⁴ = 131442517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131442583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35873 + ... + 39366.

It is an arithmetic number, because the mean of its divisors is an integer number (32879880).

Almost surely, 2^131442533 is an apocalyptic number.

It is an amenable number.

131442533 is a deficient number, since it is larger than the sum of its proper divisors (76987).

131442533 is an equidigital number, since it uses as much as digits as its factorization.

131442533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76986.

The product of its digits is 4320, while the sum is 26.

The square root of 131442533 is about 11464.8389870944. The cubic root of 131442533 is about 508.4465520337.

Adding to 131442533 its reverse (335244131), we get a palindrome (466686664).

It can be divided in two parts, 13144253 and 3, that added together give a cube (13144256 = 236³).

The spelling of 131442533 in words is "one hundred thirty-one million, four hundred forty-two thousand, five hundred thirty-three".