23213013 has 4 divisors (see below), whose sum is σ = 30950688. Its totient is φ = 15475340.

The previous prime is 23212999. The next prime is 23213033. The reversal of 23213013 is 31031232.

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 23213013 - 2⁴ = 23212997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23212983 and 23213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213033) 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, 3868833 + ... + 3868838.

It is an arithmetic number, because the mean of its divisors is an integer number (7737672).

Almost surely, 2^23213013 is an apocalyptic number.

It is an amenable number.

23213013 is a deficient number, since it is larger than the sum of its proper divisors (7737675).

23213013 is an equidigital number, since it uses as much as digits as its factorization.

23213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737674.

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

The square root of 23213013 is about 4817.9884806836. The cubic root of 23213013 is about 285.2619444600.

Adding to 23213013 its reverse (31031232), we get a palindrome (54244245).

The spelling of 23213013 in words is "twenty-three million, two hundred thirteen thousand, thirteen".