133450131131 has 4 divisors (see below), whose sum is σ = 133611109200. Its totient is φ = 133289153064.

The previous prime is 133450131091. The next prime is 133450131173. The reversal of 133450131131 is 131131054331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133450131131 - 2¹⁴ = 133450114747 is a prime.

It is a super-2 number, since 2×133450131131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133450131131.

It is not an unprimeable number, because it can be changed into a prime (133450131931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80487791 + ... + 80489448.

It is an arithmetic number, because the mean of its divisors is an integer number (33402777300).

Almost surely, 2^133450131131 is an apocalyptic number.

133450131131 is a deficient number, since it is larger than the sum of its proper divisors (160978069).

133450131131 is an equidigital number, since it uses as much as digits as its factorization.

133450131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160978068.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 133450131131 its reverse (131131054331), we get a palindrome (264581185462).

The spelling of 133450131131 in words is "one hundred thirty-three billion, four hundred fifty million, one hundred thirty-one thousand, one hundred thirty-one".