23145147 has 12 divisors (see below), whose sum is σ = 33582120. Its totient is φ = 15360768.

The previous prime is 23145119. The next prime is 23145167. The reversal of 23145147 is 74154132.

It is not a de Polignac number, because 23145147 - 2⁷ = 23145019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23145147.

It is not an unprimeable number, because it can be changed into a prime (23145167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3622 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (2798510).

Almost surely, 2^23145147 is an apocalyptic number.

23145147 is a deficient number, since it is larger than the sum of its proper divisors (10436973).

23145147 is a wasteful number, since it uses less digits than its factorization.

23145147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562 (or 11559 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 23145147 is about 4810.9403446728. The cubic root of 23145147 is about 284.9836740417.

Adding to 23145147 its reverse (74154132), we get a palindrome (97299279).

The spelling of 23145147 in words is "twenty-three million, one hundred forty-five thousand, one hundred forty-seven".