131246161 has 2 divisors, whose sum is σ = 131246162. Its totient is φ = 131246160.

The previous prime is 131246153. The next prime is 131246183. The reversal of 131246161 is 161642131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94945536 + 36300625 = 9744^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 131246161 - 2³ = 131246153 is a prime.

It is not a weakly prime, because it can be changed into another prime (131246111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65623080 + 65623081.

It is an arithmetic number, because the mean of its divisors is an integer number (65623081).

Almost surely, 2^131246161 is an apocalyptic number.

It is an amenable number.

131246161 is a deficient number, since it is larger than the sum of its proper divisors (1).

131246161 is an equidigital number, since it uses as much as digits as its factorization.

131246161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 131246161 is about 11456.2716884683. The cubic root of 131246161 is about 508.1932235075.

Adding to 131246161 its reverse (161642131), we get a palindrome (292888292).

The spelling of 131246161 in words is "one hundred thirty-one million, two hundred forty-six thousand, one hundred sixty-one".