23631641 has 16 divisors (see below), whose sum is σ = 27345408. Its totient is φ = 20217600.

The previous prime is 23631631. The next prime is 23631659. The reversal of 23631641 is 14613632.

It is a cyclic number.

It is not a de Polignac number, because 23631641 - 2¹⁴ = 23615257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23631641.

It is not an unprimeable number, because it can be changed into a prime (23631631) 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, 11681 + ... + 13553.

It is an arithmetic number, because the mean of its divisors is an integer number (1709088).

Almost surely, 2^23631641 is an apocalyptic number.

It is an amenable number.

23631641 is a deficient number, since it is larger than the sum of its proper divisors (3713767).

23631641 is a wasteful number, since it uses less digits than its factorization.

23631641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952.

The product of its digits is 2592, while the sum is 26.

The square root of 23631641 is about 4861.2386281688. The cubic root of 23631641 is about 286.9665611954.

Subtracting from 23631641 its reverse (14613632), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 2363 and 1641, that added together give a palindrome (4004).

The spelling of 23631641 in words is "twenty-three million, six hundred thirty-one thousand, six hundred forty-one".