23090143 has 4 divisors (see below), whose sum is σ = 23434840. Its totient is φ = 22745448.

The previous prime is 23090087. The next prime is 23090159. The reversal of 23090143 is 34109032.

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 23090143 - 2¹³ = 23081951 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23090843) 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, 172248 + ... + 172381.

It is an arithmetic number, because the mean of its divisors is an integer number (5858710).

Almost surely, 2^23090143 is an apocalyptic number.

23090143 is a deficient number, since it is larger than the sum of its proper divisors (344697).

23090143 is an equidigital number, since it uses as much as digits as its factorization.

23090143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344696.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23090143 is about 4805.2203903671. The cubic root of 23090143 is about 284.7577422192.

Adding to 23090143 its reverse (34109032), we get a palindrome (57199175).

The spelling of 23090143 in words is "twenty-three million, ninety thousand, one hundred forty-three".