131544173 has 2 divisors, whose sum is σ = 131544174. Its totient is φ = 131544172.

The previous prime is 131544169. The next prime is 131544223. The reversal of 131544173 is 371445131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118309129 + 13235044 = 10877^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 131544173 - 2² = 131544169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131544073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65772086 + 65772087.

It is an arithmetic number, because the mean of its divisors is an integer number (65772087).

Almost surely, 2^131544173 is an apocalyptic number.

It is an amenable number.

131544173 is a deficient number, since it is larger than the sum of its proper divisors (1).

131544173 is an equidigital number, since it uses as much as digits as its factorization.

131544173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 131544173 is about 11469.2708137876. The cubic root of 131544173 is about 508.5775730248.

The spelling of 131544173 in words is "one hundred thirty-one million, five hundred forty-four thousand, one hundred seventy-three".