23214209 has 4 divisors (see below), whose sum is σ = 23225604. Its totient is φ = 23202816.

The previous prime is 23214173. The next prime is 23214211. The reversal of 23214209 is 90241232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 11242609 = 3460^2 + 3353^2 .

It is a cyclic number.

It is not a de Polignac number, because 23214209 - 2²⁴ = 6436993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23214259) 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, 1712 + ... + 7025.

It is an arithmetic number, because the mean of its divisors is an integer number (5806401).

Almost surely, 2^23214209 is an apocalyptic number.

It is an amenable number.

23214209 is a deficient number, since it is larger than the sum of its proper divisors (11395).

23214209 is an equidigital number, since it uses as much as digits as its factorization.

23214209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11394.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23214209 is about 4818.1125972729. The cubic root of 23214209 is about 285.2668435429.

It can be divided in two parts, 232 and 14209, that added together give a palindrome (14441).

The spelling of 23214209 in words is "twenty-three million, two hundred fourteen thousand, two hundred nine".