131230133 has 4 divisors (see below), whose sum is σ = 135755340. Its totient is φ = 126704928.

The previous prime is 131230117. The next prime is 131230147. The reversal of 131230133 is 331032131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331032131 = 983 ⋅336757.

It can be written as a sum of positive squares in 2 ways, for example, as 46553329 + 84676804 = 6823^2 + 9202^2 .

It is a cyclic number.

It is not a de Polignac number, because 131230133 - 2⁴ = 131230117 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 (131230733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2262560 + ... + 2262617.

It is an arithmetic number, because the mean of its divisors is an integer number (33938835).

Almost surely, 2^131230133 is an apocalyptic number.

It is an amenable number.

131230133 is a deficient number, since it is larger than the sum of its proper divisors (4525207).

131230133 is an equidigital number, since it uses as much as digits as its factorization.

131230133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525206.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131230133 is about 11455.5721376106. The cubic root of 131230133 is about 508.1725355308.

Adding to 131230133 its reverse (331032131), we get a palindrome (462262264).

The spelling of 131230133 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred thirty-three".