23147213 has 4 divisors (see below), whose sum is σ = 23194848. Its totient is φ = 23099580.

The previous prime is 23147197. The next prime is 23147221. The reversal of 23147213 is 31274132.

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 23147213 - 2⁴ = 23147197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23147233) 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, 23081 + ... + 24062.

It is an arithmetic number, because the mean of its divisors is an integer number (5798712).

Almost surely, 2^23147213 is an apocalyptic number.

It is an amenable number.

23147213 is a deficient number, since it is larger than the sum of its proper divisors (47635).

23147213 is an equidigital number, since it uses as much as digits as its factorization.

23147213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47634.

The product of its digits is 1008, while the sum is 23.

The square root of 23147213 is about 4811.1550588190. The cubic root of 23147213 is about 284.9921532671.

The spelling of 23147213 in words is "twenty-three million, one hundred forty-seven thousand, two hundred thirteen".