23101661 has 16 divisors (see below), whose sum is σ = 26308800. Its totient is φ = 20092800.

The previous prime is 23101651. The next prime is 23101669. The reversal of 23101661 is 16610132.

It is a cyclic number.

It is not a de Polignac number, because 23101661 - 2⁶ = 23101597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23101669) 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, 44081 + ... + 44601.

It is an arithmetic number, because the mean of its divisors is an integer number (1644300).

Almost surely, 2^23101661 is an apocalyptic number.

It is an amenable number.

23101661 is a deficient number, since it is larger than the sum of its proper divisors (3207139).

23101661 is a wasteful number, since it uses less digits than its factorization.

23101661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 23101661 is about 4806.4187291579. The cubic root of 23101661 is about 284.8050826864.

Adding to 23101661 its reverse (16610132), we get a palindrome (39711793).

It can be divided in two parts, 23 and 101661, that multiplied together give a triangular number (2338203 = T₂₁₆₂).

The spelling of 23101661 in words is "twenty-three million, one hundred one thousand, six hundred sixty-one".