161269223 has 8 divisors (see below), whose sum is σ = 168030720. Its totient is φ = 154605240.

The previous prime is 161269219. The next prime is 161269231. The reversal of 161269223 is 322962161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161269223 - 2² = 161269219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161269223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161266223) 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, 20993 + ... + 27626.

It is an arithmetic number, because the mean of its divisors is an integer number (21003840).

Almost surely, 2^161269223 is an apocalyptic number.

161269223 is a deficient number, since it is larger than the sum of its proper divisors (6761497).

161269223 is a wasteful number, since it uses less digits than its factorization.

161269223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48757.

The product of its digits is 7776, while the sum is 32.

The square root of 161269223 is about 12699.1819815294. The cubic root of 161269223 is about 544.3152447171.

The spelling of 161269223 in words is "one hundred sixty-one million, two hundred sixty-nine thousand, two hundred twenty-three".