161324271 has 16 divisors (see below), whose sum is σ = 253058400. Its totient is φ = 101222784.

The previous prime is 161324263. The next prime is 161324281. The reversal of 161324271 is 172423161.

161324271 is a `hidden beast` number, since 1 + 613 + 2 + 42 + 7 + 1 = 666.

It is not a de Polignac number, because 161324271 - 2³ = 161324263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161324201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175276 + ... + 176193.

It is an arithmetic number, because the mean of its divisors is an integer number (15816150).

Almost surely, 2^161324271 is an apocalyptic number.

161324271 is a deficient number, since it is larger than the sum of its proper divisors (91734129).

161324271 is a wasteful number, since it uses less digits than its factorization.

161324271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351495 (or 351489 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 161324271 is about 12701.3491803036. The cubic root of 161324271 is about 544.3771702691.

The spelling of 161324271 in words is "one hundred sixty-one million, three hundred twenty-four thousand, two hundred seventy-one".