131333287 has 2 divisors, whose sum is σ = 131333288. Its totient is φ = 131333286.

The previous prime is 131333273. The next prime is 131333303. The reversal of 131333287 is 782333131.

It is a weak prime.

It is an emirp because it is prime and its reverse (782333131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131333287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666643 + 65666644.

It is an arithmetic number, because the mean of its divisors is an integer number (65666644).

Almost surely, 2^131333287 is an apocalyptic number.

131333287 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333287 is an equidigital number, since it uses as much as digits as its factorization.

131333287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 131333287 is about 11460.0736036031. The cubic root of 131333287 is about 508.3056510471.

The spelling of 131333287 in words is "one hundred thirty-one million, three hundred thirty-three thousand, two hundred eighty-seven".