23031213 has 4 divisors (see below), whose sum is σ = 30708288. Its totient is φ = 15354140.

The previous prime is 23031167. The next prime is 23031227. The reversal of 23031213 is 31213032.

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 23031213 - 2⁸ = 23030957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23031192 and 23031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838533 + ... + 3838538.

It is an arithmetic number, because the mean of its divisors is an integer number (7677072).

Almost surely, 2^23031213 is an apocalyptic number.

It is an amenable number.

23031213 is a deficient number, since it is larger than the sum of its proper divisors (7677075).

23031213 is an equidigital number, since it uses as much as digits as its factorization.

23031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677074.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23031213 is about 4799.0846002128. The cubic root of 23031213 is about 284.5152856606.

Adding to 23031213 its reverse (31213032), we get a palindrome (54244245).

The spelling of 23031213 in words is "twenty-three million, thirty-one thousand, two hundred thirteen".