131545061 has 2 divisors, whose sum is σ = 131545062. Its totient is φ = 131545060.

The previous prime is 131545039. The next prime is 131545067. The reversal of 131545061 is 160545131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120780100 + 10764961 = 10990^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 131545061 - 2¹⁰ = 131544037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131545061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131545067) 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, 65772530 + 65772531.

It is an arithmetic number, because the mean of its divisors is an integer number (65772531).

Almost surely, 2^131545061 is an apocalyptic number.

It is an amenable number.

131545061 is a deficient number, since it is larger than the sum of its proper divisors (1).

131545061 is an equidigital number, since it uses as much as digits as its factorization.

131545061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 131545061 is about 11469.3095258607. The cubic root of 131545061 is about 508.5787174208.

The spelling of 131545061 in words is "one hundred thirty-one million, five hundred forty-five thousand, sixty-one".