233123161 has 4 divisors (see below), whose sum is σ = 233241552. Its totient is φ = 233004772.

The previous prime is 233123123. The next prime is 233123207. The reversal of 233123161 is 161321332.

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 a de Polignac number, because none of the positive numbers 2^k-233123161 is a prime.

It is a super-4 number, since 4×233123161⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233123861) 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, 56191 + ... + 60196.

It is an arithmetic number, because the mean of its divisors is an integer number (58310388).

Almost surely, 2^233123161 is an apocalyptic number.

It is an amenable number.

233123161 is a deficient number, since it is larger than the sum of its proper divisors (118391).

233123161 is a wasteful number, since it uses less digits than its factorization.

233123161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118390.

The product of its digits is 648, while the sum is 22.

The square root of 233123161 is about 15268.3712621877. The cubic root of 233123161 is about 615.4533515838.

Adding to 233123161 its reverse (161321332), we get a palindrome (394444493).

The spelling of 233123161 in words is "two hundred thirty-three million, one hundred twenty-three thousand, one hundred sixty-one".