23494143 has 4 divisors (see below), whose sum is σ = 31325528. Its totient is φ = 15662760.

The previous prime is 23494117. The next prime is 23494183. The reversal of 23494143 is 34149432.

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

It is not a de Polignac number, because 23494143 - 2⁸ = 23493887 is a prime.

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

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 23494143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23494183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3915688 + ... + 3915693.

It is an arithmetic number, because the mean of its divisors is an integer number (7831382).

Almost surely, 2^23494143 is an apocalyptic number.

23494143 is a deficient number, since it is larger than the sum of its proper divisors (7831385).

23494143 is an equidigital number, since it uses as much as digits as its factorization.

23494143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831384.

The product of its digits is 10368, while the sum is 30.

The square root of 23494143 is about 4847.0757163469. The cubic root of 23494143 is about 286.4089175607.

The spelling of 23494143 in words is "twenty-three million, four hundred ninety-four thousand, one hundred forty-three".