131286133 has 4 divisors (see below), whose sum is σ = 143221248. Its totient is φ = 119351020.

The previous prime is 131286107. The next prime is 131286149. The reversal of 131286133 is 331682131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131286133 - 2¹⁷ = 131155061 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 (131286173) 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, 5967541 + ... + 5967562.

It is an arithmetic number, because the mean of its divisors is an integer number (35805312).

Almost surely, 2^131286133 is an apocalyptic number.

It is an amenable number.

131286133 is a deficient number, since it is larger than the sum of its proper divisors (11935115).

131286133 is a wasteful number, since it uses less digits than its factorization.

131286133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935114.

The product of its digits is 2592, while the sum is 28.

The square root of 131286133 is about 11458.0161022753. The cubic root of 131286133 is about 508.2448096200.

The spelling of 131286133 in words is "one hundred thirty-one million, two hundred eighty-six thousand, one hundred thirty-three".