161323671 has 8 divisors (see below), whose sum is σ = 216287344. Its totient is φ = 106954560.

The previous prime is 161323667. The next prime is 161323681. The reversal of 161323671 is 176323161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161323671 - 2² = 161323667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161323601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148006 + ... + 149091.

It is an arithmetic number, because the mean of its divisors is an integer number (27035918).

Almost surely, 2^161323671 is an apocalyptic number.

161323671 is a deficient number, since it is larger than the sum of its proper divisors (54963673).

161323671 is a wasteful number, since it uses less digits than its factorization.

161323671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297281.

The product of its digits is 4536, while the sum is 30.

The square root of 161323671 is about 12701.3255607437. The cubic root of 161323671 is about 544.3764953826.

The spelling of 161323671 in words is "one hundred sixty-one million, three hundred twenty-three thousand, six hundred seventy-one".