23161104 has 30 divisors (see below), whose sum is σ = 64819326. Its totient is φ = 7720320.

The previous prime is 23161091. The next prime is 23161129. The reversal of 23161104 is 40116132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 121104 = 4800^2 + 348^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80277 + ... + 80564.

Almost surely, 2^23161104 is an apocalyptic number.

23161104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23161104 is an abundant number, since it is smaller than the sum of its proper divisors (41658222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23161104 is a wasteful number, since it uses less digits than its factorization.

23161104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160855 (or 160846 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 23161104 is about 4812.5984665251. The cubic root of 23161104 is about 285.0491512643.

Adding to 23161104 its reverse (40116132), we get a palindrome (63277236).

The spelling of 23161104 in words is "twenty-three million, one hundred sixty-one thousand, one hundred four".