232209161 has 4 divisors (see below), whose sum is σ = 232428672. Its totient is φ = 231989652.

The previous prime is 232209149. The next prime is 232209169. The reversal of 232209161 is 161902232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232209161 - 2⁶ = 232209097 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 232209161.

It is not an unprimeable number, because it can be changed into a prime (232209169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108161 + ... + 110286.

It is an arithmetic number, because the mean of its divisors is an integer number (58107168).

Almost surely, 2^232209161 is an apocalyptic number.

It is an amenable number.

232209161 is a deficient number, since it is larger than the sum of its proper divisors (219511).

232209161 is a wasteful number, since it uses less digits than its factorization.

232209161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219510.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 232209161 is about 15238.4107110945. The cubic root of 232209161 is about 614.6479673901.

The spelling of 232209161 in words is "two hundred thirty-two million, two hundred nine thousand, one hundred sixty-one".