23154197 has 12 divisors (see below), whose sum is σ = 25875948. Its totient is φ = 20697600.

The previous prime is 23154181. The next prime is 23154199. The reversal of 23154197 is 79145132.

It can be written as a sum of positive squares in 2 ways, for example, as 13256881 + 9897316 = 3641^2 + 3146^2 .

It is not a de Polignac number, because 23154197 - 2⁴ = 23154181 is a prime.

It is a super-2 number, since 2×23154197² = 1072233677429618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5813 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (2156329).

Almost surely, 2^23154197 is an apocalyptic number.

It is an amenable number.

23154197 is a deficient number, since it is larger than the sum of its proper divisors (2721751).

23154197 is a wasteful number, since it uses less digits than its factorization.

23154197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220 (or 3209 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 23154197 is about 4811.8808173104. The cubic root of 23154197 is about 285.0208130896.

The spelling of 23154197 in words is "twenty-three million, one hundred fifty-four thousand, one hundred ninety-seven".