136423471 has 2 divisors, whose sum is σ = 136423472. Its totient is φ = 136423470.

The previous prime is 136423433. The next prime is 136423513. The reversal of 136423471 is 174324631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136423471 - 2²¹ = 134326319 is a prime.

It is a super-3 number, since 3×136423471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136423411) 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, 68211735 + 68211736.

It is an arithmetic number, because the mean of its divisors is an integer number (68211736).

Almost surely, 2^136423471 is an apocalyptic number.

136423471 is a deficient number, since it is larger than the sum of its proper divisors (1).

136423471 is an equidigital number, since it uses as much as digits as its factorization.

136423471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 136423471 is about 11680.0458475128. The cubic root of 136423471 is about 514.7895215559.

The spelling of 136423471 in words is "one hundred thirty-six million, four hundred twenty-three thousand, four hundred seventy-one".