131354689 has 2 divisors, whose sum is σ = 131354690. Its totient is φ = 131354688.

The previous prime is 131354687. The next prime is 131354747. The reversal of 131354689 is 986453131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73822464 + 57532225 = 8592^2 + 7585^2 .

It is a cyclic number.

It is not a de Polignac number, because 131354689 - 2¹ = 131354687 is a prime.

Together with 131354687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131354683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65677344 + 65677345.

It is an arithmetic number, because the mean of its divisors is an integer number (65677345).

Almost surely, 2^131354689 is an apocalyptic number.

It is an amenable number.

131354689 is a deficient number, since it is larger than the sum of its proper divisors (1).

131354689 is an equidigital number, since it uses as much as digits as its factorization.

131354689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 131354689 is about 11461.0073292010. The cubic root of 131354689 is about 508.3332606169. Note that the first 3 decimals are identical.

The spelling of 131354689 in words is "one hundred thirty-one million, three hundred fifty-four thousand, six hundred eighty-nine".