23131733 has 4 divisors (see below), whose sum is σ = 23187360. Its totient is φ = 23076108.

The previous prime is 23131711. The next prime is 23131741. The reversal of 23131733 is 33713132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23131733 - 2⁸ = 23131477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23131699 and 23131708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131783) 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, 27185 + ... + 28022.

It is an arithmetic number, because the mean of its divisors is an integer number (5796840).

Almost surely, 2^23131733 is an apocalyptic number.

It is an amenable number.

23131733 is a deficient number, since it is larger than the sum of its proper divisors (55627).

23131733 is an equidigital number, since it uses as much as digits as its factorization.

23131733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55626.

The product of its digits is 1134, while the sum is 23.

The square root of 23131733 is about 4809.5460284730. The cubic root of 23131733 is about 284.9286083621.

Adding to 23131733 its reverse (33713132), we get a palindrome (56844865).

The spelling of 23131733 in words is "twenty-three million, one hundred thirty-one thousand, seven hundred thirty-three".