161743023 has 12 divisors (see below), whose sum is σ = 251600440. Its totient is φ = 99534096.

The previous prime is 161742989. The next prime is 161743037. The reversal of 161743023 is 320347161.

161743023 is a `hidden beast` number, since 1 + 617 + 43 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 161743023 - 2¹⁰ = 161741999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161743123) 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 in 11 ways as a sum of consecutive naturals, for example, 691093 + ... + 691326.

Almost surely, 2^161743023 is an apocalyptic number.

161743023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161743023 is a deficient number, since it is larger than the sum of its proper divisors (89857417).

161743023 is a wasteful number, since it uses less digits than its factorization.

161743023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382438 (or 1382435 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 161743023 is about 12717.8230448454. The cubic root of 161743023 is about 544.8477795010.

The spelling of 161743023 in words is "one hundred sixty-one million, seven hundred forty-three thousand, twenty-three".