23198291 has 4 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 23111784.

The previous prime is 23198249. The next prime is 23198293. The reversal of 23198291 is 19289132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23198291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23198293) 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, 42851 + ... + 43388.

It is an arithmetic number, because the mean of its divisors is an integer number (5821200).

Almost surely, 2^23198291 is an apocalyptic number.

23198291 is a deficient number, since it is larger than the sum of its proper divisors (86509).

23198291 is an equidigital number, since it uses as much as digits as its factorization.

23198291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86508.

The product of its digits is 7776, while the sum is 35.

The square root of 23198291 is about 4816.4604223434. The cubic root of 23198291 is about 285.2016260734.

The spelling of 23198291 in words is "twenty-three million, one hundred ninety-eight thousand, two hundred ninety-one".