161423023 has 2 divisors, whose sum is σ = 161423024. Its totient is φ = 161423022.

The previous prime is 161422981. The next prime is 161423081. The reversal of 161423023 is 320324161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161423023 - 2⁹ = 161422511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161422985 and 161423003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161423083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80711511 + 80711512.

It is an arithmetic number, because the mean of its divisors is an integer number (80711512).

Almost surely, 2^161423023 is an apocalyptic number.

161423023 is a deficient number, since it is larger than the sum of its proper divisors (1).

161423023 is an equidigital number, since it uses as much as digits as its factorization.

161423023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 161423023 is about 12705.2360466069. The cubic root of 161423023 is about 544.4882247901.

Adding to 161423023 its reverse (320324161), we get a palindrome (481747184).

The spelling of 161423023 in words is "one hundred sixty-one million, four hundred twenty-three thousand, twenty-three".