23611161 has 16 divisors (see below), whose sum is σ = 36080000. Its totient is φ = 13454208.

The previous prime is 23611153. The next prime is 23611169. The reversal of 23611161 is 16111632.

It is an interprime number because it is at equal distance from previous prime (23611153) and next prime (23611169).

It is not a de Polignac number, because 23611161 - 2³ = 23611153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23611169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7215 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (2255000).

Almost surely, 2^23611161 is an apocalyptic number.

23611161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23611161 is a deficient number, since it is larger than the sum of its proper divisors (12468839).

23611161 is a wasteful number, since it uses less digits than its factorization.

23611161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its digits is 216, while the sum is 21.

The square root of 23611161 is about 4859.1317125594. The cubic root of 23611161 is about 286.8836388435.

Adding to 23611161 its reverse (16111632), we get a palindrome (39722793).

It can be divided in two parts, 2 and 3611161, that added together give a palindrome (3611163).

The spelling of 23611161 in words is "twenty-three million, six hundred eleven thousand, one hundred sixty-one".