23143047 has 4 divisors (see below), whose sum is σ = 30857400. Its totient is φ = 15428696.

The previous prime is 23143031. The next prime is 23143051. The reversal of 23143047 is 74034132.

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

It is a cyclic number.

It is not a de Polignac number, because 23143047 - 2⁴ = 23143031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143067) 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, 3857172 + ... + 3857177.

It is an arithmetic number, because the mean of its divisors is an integer number (7714350).

Almost surely, 2^23143047 is an apocalyptic number.

23143047 is a deficient number, since it is larger than the sum of its proper divisors (7714353).

23143047 is an equidigital number, since it uses as much as digits as its factorization.

23143047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714352.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 23143047 is about 4810.7220871715. The cubic root of 23143047 is about 284.9750547573.

Adding to 23143047 its reverse (74034132), we get a palindrome (97177179).

The spelling of 23143047 in words is "twenty-three million, one hundred forty-three thousand, forty-seven".