23143689 has 12 divisors (see below), whose sum is σ = 33473076. Its totient is φ = 15409152.

The previous prime is 23143667. The next prime is 23143697. The reversal of 23143689 is 98634132.

It can be written as a sum of positive squares in 2 ways, for example, as 2350089 + 20793600 = 1533^2 + 4560^2 .

It is not a de Polignac number, because 23143689 - 2¹⁷ = 23012617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23143699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9897 + ... + 12009.

It is an arithmetic number, because the mean of its divisors is an integer number (2789423).

Almost surely, 2^23143689 is an apocalyptic number.

It is an amenable number.

23143689 is a deficient number, since it is larger than the sum of its proper divisors (10329387).

23143689 is a wasteful number, since it uses less digits than its factorization.

23143689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336 (or 3333 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 23143689 is about 4810.7888126585. The cubic root of 23143689 is about 284.9776898510.

It can be divided in two parts, 23143 and 689, that added together give a palindrome (23832).

The spelling of 23143689 in words is "twenty-three million, one hundred forty-three thousand, six hundred eighty-nine".