136591031 has 2 divisors, whose sum is σ = 136591032. Its totient is φ = 136591030.

The previous prime is 136591001. The next prime is 136591051. The reversal of 136591031 is 130195631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136591031 - 2¹⁰ = 136590007 is a prime.

It is a super-2 number, since 2×136591031² = 37314219499285922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136590985 and 136591003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136591001) 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, 68295515 + 68295516.

It is an arithmetic number, because the mean of its divisors is an integer number (68295516).

Almost surely, 2^136591031 is an apocalyptic number.

136591031 is a deficient number, since it is larger than the sum of its proper divisors (1).

136591031 is an equidigital number, since it uses as much as digits as its factorization.

136591031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 136591031 is about 11687.2165634081. The cubic root of 136591031 is about 515.0001960599. Note that the first 3 decimals are identical.

The spelling of 136591031 in words is "one hundred thirty-six million, five hundred ninety-one thousand, thirty-one".