136404131 has 2 divisors, whose sum is σ = 136404132. Its totient is φ = 136404130.

The previous prime is 136404067. The next prime is 136404133. The reversal of 136404131 is 131404631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136404131 - 2⁶ = 136404067 is a prime.

It is a super-2 number, since 2×136404131² = 37212173907730322, which contains 22 as substring.

Together with 136404133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136404097 and 136404106.

It is not a weakly prime, because it can be changed into another prime (136404133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68202065 + 68202066.

It is an arithmetic number, because the mean of its divisors is an integer number (68202066).

Almost surely, 2^136404131 is an apocalyptic number.

136404131 is a deficient number, since it is larger than the sum of its proper divisors (1).

136404131 is an equidigital number, since it uses as much as digits as its factorization.

136404131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 136404131 is about 11679.2179104596. The cubic root of 136404131 is about 514.7651941197.

Adding to 136404131 its reverse (131404631), we get a palindrome (267808762).

It can be divided in two parts, 13640 and 4131, that added together give a palindrome (17771).

The spelling of 136404131 in words is "one hundred thirty-six million, four hundred four thousand, one hundred thirty-one".