131113133 has 4 divisors (see below), whose sum is σ = 136813728. Its totient is φ = 125412540.

The previous prime is 131113123. The next prime is 131113139. The reversal of 131113133 is 331311131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331311131 = 47 ⋅7049173.

It is a cyclic number.

It is not a de Polignac number, because 131113133 - 2⁶ = 131113069 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 (131113139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850263 + ... + 2850308.

It is an arithmetic number, because the mean of its divisors is an integer number (34203432).

Almost surely, 2^131113133 is an apocalyptic number.

It is an amenable number.

131113133 is a deficient number, since it is larger than the sum of its proper divisors (5700595).

131113133 is an equidigital number, since it uses as much as digits as its factorization.

131113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700594.

The product of its digits is 81, while the sum is 17.

The square root of 131113133 is about 11450.4643137298. The cubic root of 131113133 is about 508.0214679274.

Adding to 131113133 its reverse (331311131), we get a palindrome (462424264).

The spelling of 131113133 in words is "one hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-three".