23031433 has 4 divisors (see below), whose sum is σ = 23041408. Its totient is φ = 23021460.

The previous prime is 23031409. The next prime is 23031461. The reversal of 23031433 is 33413032.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23031433 - 2²¹ = 20934281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23031433.

It is not an unprimeable number, because it can be changed into a prime (23031403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460 + ... + 6802.

It is an arithmetic number, because the mean of its divisors is an integer number (5760352).

Almost surely, 2^23031433 is an apocalyptic number.

It is an amenable number.

23031433 is a deficient number, since it is larger than the sum of its proper divisors (9975).

23031433 is an equidigital number, since it uses as much as digits as its factorization.

23031433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9974.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 23031433 is about 4799.1075211960. The cubic root of 23031433 is about 284.5161915785.

Adding to 23031433 its reverse (33413032), we get a palindrome (56444465).

The spelling of 23031433 in words is "twenty-three million, thirty-one thousand, four hundred thirty-three".