23531361 has 8 divisors (see below), whose sum is σ = 35857344. Its totient is φ = 13446480.

The previous prime is 23531359. The next prime is 23531401. The reversal of 23531361 is 16313532.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23531361 - 2¹ = 23531359 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23531341) 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 7 ways as a sum of consecutive naturals, for example, 560250 + ... + 560291.

It is an arithmetic number, because the mean of its divisors is an integer number (4482168).

Almost surely, 2^23531361 is an apocalyptic number.

23531361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23531361 is a deficient number, since it is larger than the sum of its proper divisors (12325983).

23531361 is a wasteful number, since it uses less digits than its factorization.

23531361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120551.

The product of its digits is 1620, while the sum is 24.

The square root of 23531361 is about 4850.9134191408. The cubic root of 23531361 is about 286.5600749973.

Adding to 23531361 its reverse (16313532), we get a palindrome (39844893).

The spelling of 23531361 in words is "twenty-three million, five hundred thirty-one thousand, three hundred sixty-one".