23012143 has 24 divisors (see below), whose sum is σ = 29302560. Its totient is φ = 17688000.

The previous prime is 23012117. The next prime is 23012149. The reversal of 23012143 is 34121032.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23012143 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85413 + ... + 85681.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^23012143 is an apocalyptic number.

23012143 is a deficient number, since it is larger than the sum of its proper divisors (6290417).

23012143 is a wasteful number, since it uses less digits than its factorization.

23012143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23012143 is about 4797.0973515241. The cubic root of 23012143 is about 284.4367371173.

Adding to 23012143 its reverse (34121032), we get a palindrome (57133175).

Subtracting 23012143 from its reverse (34121032), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2301 and 2143, that added together give a palindrome (4444).

The spelling of 23012143 in words is "twenty-three million, twelve thousand, one hundred forty-three".