23143258 has 4 divisors (see below), whose sum is σ = 34714890. Its totient is φ = 11571628.

The previous prime is 23143199. The next prime is 23143259. The reversal of 23143258 is 85234132.

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

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 2866249 = 4503^2 + 1693^2 .

It is a super-2 number, since 2×23143258² = 1071220781709128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23143259) 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 as a sum of consecutive naturals, namely, 5785813 + ... + 5785816.

Almost surely, 2^23143258 is an apocalyptic number.

23143258 is a deficient number, since it is larger than the sum of its proper divisors (11571632).

23143258 is a wasteful number, since it uses less digits than its factorization.

23143258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11571631.

The product of its digits is 5760, while the sum is 28.

The square root of 23143258 is about 4810.7440173013. The cubic root of 23143258 is about 284.9759208137.

The spelling of 23143258 in words is "twenty-three million, one hundred forty-three thousand, two hundred fifty-eight".