131528911 has 2 divisors, whose sum is σ = 131528912. Its totient is φ = 131528910.

The previous prime is 131528909. The next prime is 131528977. The reversal of 131528911 is 119825131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131528911 - 2¹ = 131528909 is a prime.

Together with 131528909, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131528981) 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, 65764455 + 65764456.

It is an arithmetic number, because the mean of its divisors is an integer number (65764456).

Almost surely, 2^131528911 is an apocalyptic number.

131528911 is a deficient number, since it is larger than the sum of its proper divisors (1).

131528911 is an equidigital number, since it uses as much as digits as its factorization.

131528911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 31.

The square root of 131528911 is about 11468.6054514052. The cubic root of 131528911 is about 508.5579035583.

The spelling of 131528911 in words is "one hundred thirty-one million, five hundred twenty-eight thousand, nine hundred eleven".