131304133 has 4 divisors (see below), whose sum is σ = 131625580. Its totient is φ = 130982688.

The previous prime is 131304113. The next prime is 131304139. The reversal of 131304133 is 331403131.

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 65011969 + 66292164 = 8063^2 + 8142^2 .

It is a cyclic number.

It is not a de Polignac number, because 131304133 - 2⁵ = 131304101 is a prime.

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 131304133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131304139) 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, 160110 + ... + 160927.

It is an arithmetic number, because the mean of its divisors is an integer number (32906395).

Almost surely, 2^131304133 is an apocalyptic number.

It is an amenable number.

131304133 is a deficient number, since it is larger than the sum of its proper divisors (321447).

131304133 is an equidigital number, since it uses as much as digits as its factorization.

131304133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321446.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 131304133 is about 11458.8015516458. The cubic root of 131304133 is about 508.2680362124.

Adding to 131304133 its reverse (331403131), we get a palindrome (462707264).

The spelling of 131304133 in words is "one hundred thirty-one million, three hundred four thousand, one hundred thirty-three".