23216361 has 32 divisors (see below), whose sum is σ = 37490688. Its totient is φ = 12492480.

The previous prime is 23216341. The next prime is 23216363. The reversal of 23216361 is 16361232.

It is a happy number.

It is not a de Polignac number, because 23216361 - 2⁹ = 23215849 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (23216363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33955 + ... + 34631.

It is an arithmetic number, because the mean of its divisors is an integer number (1171584).

Almost surely, 2^23216361 is an apocalyptic number.

23216361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23216361 is a deficient number, since it is larger than the sum of its proper divisors (14274327).

23216361 is a wasteful number, since it uses less digits than its factorization.

23216361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 1296, while the sum is 24.

The square root of 23216361 is about 4818.3359160606. The cubic root of 23216361 is about 285.2756581914.

Adding to 23216361 its reverse (16361232), we get a palindrome (39577593).

The spelling of 23216361 in words is "twenty-three million, two hundred sixteen thousand, three hundred sixty-one".