23012216 has 8 divisors (see below), whose sum is σ = 43147920. Its totient is φ = 11506104.

The previous prime is 23012191. The next prime is 23012219. The reversal of 23012216 is 61221032.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 23012194 and 23012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1438256 + ... + 1438271.

It is an arithmetic number, because the mean of its divisors is an integer number (5393490).

Almost surely, 2^23012216 is an apocalyptic number.

It is an amenable number.

23012216 is a deficient number, since it is larger than the sum of its proper divisors (20135704).

23012216 is a wasteful number, since it uses less digits than its factorization.

23012216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876533 (or 2876529 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 23012216 is about 4797.1049602859. The cubic root of 23012216 is about 284.4370378840.

Adding to 23012216 its reverse (61221032), we get a palindrome (84233248).

The spelling of 23012216 in words is "twenty-three million, twelve thousand, two hundred sixteen".