133131013 has 4 divisors (see below), whose sum is σ = 133358400. Its totient is φ = 132903628.

The previous prime is 133131007. The next prime is 133131017. The reversal of 133131013 is 310131331.

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: 310131331 = 659 ⋅470609.

It is a cyclic number.

It is not a de Polignac number, because 133131013 - 2⁵ = 133130981 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 (133131017) 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, 112813 + ... + 113986.

It is an arithmetic number, because the mean of its divisors is an integer number (33339600).

Almost surely, 2^133131013 is an apocalyptic number.

It is an amenable number.

133131013 is a deficient number, since it is larger than the sum of its proper divisors (227387).

133131013 is an equidigital number, since it uses as much as digits as its factorization.

133131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227386.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 133131013 is about 11538.2413304628. The cubic root of 133131013 is about 510.6144241535.

Adding to 133131013 its reverse (310131331), we get a palindrome (443262344).

The spelling of 133131013 in words is "one hundred thirty-three million, one hundred thirty-one thousand, thirteen".