23213718 has 24 divisors (see below), whose sum is σ = 54869256. Its totient is φ = 7034400.

The previous prime is 23213711. The next prime is 23213719. The reversal of 23213718 is 81731232.

It is a junction number, because it is equal to n+sod(n) for n = 23213691 and 23213700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58423 + ... + 58818.

It is an arithmetic number, because the mean of its divisors is an integer number (2286219).

Almost surely, 2^23213718 is an apocalyptic number.

23213718 is an abundant number, since it is smaller than the sum of its proper divisors (31655538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23213718 is a wasteful number, since it uses less digits than its factorization.

23213718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117260 (or 117257 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 23213718 is about 4818.0616434413. The cubic root of 23213718 is about 285.2648323177.

The spelling of 23213718 in words is "twenty-three million, two hundred thirteen thousand, seven hundred eighteen".