23198213 has 4 divisors (see below), whose sum is σ = 23691840. Its totient is φ = 22704588.

The previous prime is 23198209. The next prime is 23198233. The reversal of 23198213 is 31289132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23198213 - 2² = 23198209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23198233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246743 + ... + 246836.

It is an arithmetic number, because the mean of its divisors is an integer number (5922960).

Almost surely, 2^23198213 is an apocalyptic number.

It is an amenable number.

23198213 is a deficient number, since it is larger than the sum of its proper divisors (493627).

23198213 is an equidigital number, since it uses as much as digits as its factorization.

23198213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493626.

The product of its digits is 2592, while the sum is 29.

The square root of 23198213 is about 4816.4523251040. The cubic root of 23198213 is about 285.2013064269.

The spelling of 23198213 in words is "twenty-three million, one hundred ninety-eight thousand, two hundred thirteen".