131038081 has 2 divisors, whose sum is σ = 131038082. Its totient is φ = 131038080.

The previous prime is 131038073. The next prime is 131038087. The reversal of 131038081 is 180830131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116445681 + 14592400 = 10791^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 131038081 - 2³ = 131038073 is a prime.

It is a super-2 number, since 2×131038081² = 34341957344325122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131038087) 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, 65519040 + 65519041.

It is an arithmetic number, because the mean of its divisors is an integer number (65519041).

Almost surely, 2^131038081 is an apocalyptic number.

It is an amenable number.

131038081 is a deficient number, since it is larger than the sum of its proper divisors (1).

131038081 is an equidigital number, since it uses as much as digits as its factorization.

131038081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 131038081 is about 11447.1865975881. The cubic root of 131038081 is about 507.9245152582.

The spelling of 131038081 in words is "one hundred thirty-one million, thirty-eight thousand, eighty-one".