23621161 has 16 divisors (see below), whose sum is σ = 26173440. Its totient is φ = 21217680.

The previous prime is 23621113. The next prime is 23621183. The reversal of 23621161 is 16112632.

It is not a de Polignac number, because 23621161 - 2¹³ = 23612969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23621261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83326 + ... + 83608.

It is an arithmetic number, because the mean of its divisors is an integer number (1635840).

Almost surely, 2^23621161 is an apocalyptic number.

It is an amenable number.

23621161 is a deficient number, since it is larger than the sum of its proper divisors (2552279).

23621161 is a wasteful number, since it uses less digits than its factorization.

23621161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its digits is 432, while the sum is 22.

The square root of 23621161 is about 4860.1605940545. The cubic root of 23621161 is about 286.9241342611.

Adding to 23621161 its reverse (16112632), we get a palindrome (39733793).

The spelling of 23621161 in words is "twenty-three million, six hundred twenty-one thousand, one hundred sixty-one".