23131043 has 4 divisors (see below), whose sum is σ = 24910368. Its totient is φ = 21351720.

The previous prime is 23131027. The next prime is 23131057. The reversal of 23131043 is 34013132.

It is a happy number.

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

It is not a de Polignac number, because 23131043 - 2⁴ = 23131027 is a prime.

It is a super-3 number, since 3×23131043³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23139043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889643 + ... + 889668.

It is an arithmetic number, because the mean of its divisors is an integer number (6227592).

Almost surely, 2^23131043 is an apocalyptic number.

23131043 is a deficient number, since it is larger than the sum of its proper divisors (1779325).

23131043 is a wasteful number, since it uses less digits than its factorization.

23131043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779324.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23131043 is about 4809.4742955961. The cubic root of 23131043 is about 284.9257752742.

Adding to 23131043 its reverse (34013132), we get a palindrome (57144175).

The spelling of 23131043 in words is "twenty-three million, one hundred thirty-one thousand, forty-three".