131242242133 has 4 divisors (see below), whose sum is σ = 132123062700. Its totient is φ = 130361421568.

The previous prime is 131242242119. The next prime is 131242242161. The reversal of 131242242133 is 331242242131.

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 41384985489 + 89857256644 = 203433^2 + 299762^2 .

It is a cyclic number.

It is not a de Polignac number, because 131242242133 - 2⁵ = 131242242101 is a prime.

It is a super-2 number, since 2×131242242133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131242242193) 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, 440410060 + ... + 440410357.

It is an arithmetic number, because the mean of its divisors is an integer number (33030765675).

Almost surely, 2^131242242133 is an apocalyptic number.

It is an amenable number.

131242242133 is a deficient number, since it is larger than the sum of its proper divisors (880820567).

131242242133 is an equidigital number, since it uses as much as digits as its factorization.

131242242133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880820566.

The product of its digits is 6912, while the sum is 28.

Adding to 131242242133 its reverse (331242242131), we get a palindrome (462484484264).

The spelling of 131242242133 in words is "one hundred thirty-one billion, two hundred forty-two million, two hundred forty-two thousand, one hundred thirty-three".