23135143 has 4 divisors (see below), whose sum is σ = 23251600. Its totient is φ = 23018688.

The previous prime is 23135131. The next prime is 23135149. The reversal of 23135143 is 34153132.

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 23135143 - 2¹³ = 23126951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23135149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57930 + ... + 58327.

It is an arithmetic number, because the mean of its divisors is an integer number (5812900).

Almost surely, 2^23135143 is an apocalyptic number.

23135143 is a deficient number, since it is larger than the sum of its proper divisors (116457).

23135143 is a wasteful number, since it uses less digits than its factorization.

23135143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116456.

The product of its digits is 1080, while the sum is 22.

The square root of 23135143 is about 4809.9005187218. The cubic root of 23135143 is about 284.9426087372.

Adding to 23135143 its reverse (34153132), we get a palindrome (57288275).

The spelling of 23135143 in words is "twenty-three million, one hundred thirty-five thousand, one hundred forty-three".