23542213 has 4 divisors (see below), whose sum is σ = 23577868. Its totient is φ = 23506560.

The previous prime is 23542193. The next prime is 23542219. The reversal of 23542213 is 31224532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10452289 + 13089924 = 3233^2 + 3618^2 .

It is a cyclic number.

It is not a de Polignac number, because 23542213 - 2⁹ = 23541701 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 (23542219) 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, 16818 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (5894467).

Almost surely, 2^23542213 is an apocalyptic number.

It is an amenable number.

23542213 is a deficient number, since it is larger than the sum of its proper divisors (35655).

23542213 is an equidigital number, since it uses as much as digits as its factorization.

23542213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35654.

The product of its digits is 1440, while the sum is 22.

The square root of 23542213 is about 4852.0318424347. The cubic root of 23542213 is about 286.6041193688.

Adding to 23542213 its reverse (31224532), we get a palindrome (54766745).

The spelling of 23542213 in words is "twenty-three million, five hundred forty-two thousand, two hundred thirteen".