161134423 has 2 divisors, whose sum is σ = 161134424. Its totient is φ = 161134422.

The previous prime is 161134417. The next prime is 161134439. The reversal of 161134423 is 324431161.

It is a weak prime.

It is an emirp because it is prime and its reverse (324431161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161134423 - 2²¹ = 159037271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161104423) 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, 80567211 + 80567212.

It is an arithmetic number, because the mean of its divisors is an integer number (80567212).

Almost surely, 2^161134423 is an apocalyptic number.

161134423 is a deficient number, since it is larger than the sum of its proper divisors (1).

161134423 is an equidigital number, since it uses as much as digits as its factorization.

161134423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 161134423 is about 12693.8734435160. The cubic root of 161134423 is about 544.1635436325.

Adding to 161134423 its reverse (324431161), we get a palindrome (485565584).

The spelling of 161134423 in words is "one hundred sixty-one million, one hundred thirty-four thousand, four hundred twenty-three".