23641213 has 4 divisors (see below), whose sum is σ = 23654620. Its totient is φ = 23627808.

The previous prime is 23641207. The next prime is 23641223. The reversal of 23641213 is 31214632.

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 22071204 + 1570009 = 4698^2 + 1253^2 .

It is a cyclic number.

It is not a de Polignac number, because 23641213 - 2¹³ = 23633021 is a prime.

It is a super-2 number, since 2×23641213² = 1117813904222738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641223) 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, 3570 + ... + 7747.

It is an arithmetic number, because the mean of its divisors is an integer number (5913655).

Almost surely, 2^23641213 is an apocalyptic number.

It is an amenable number.

23641213 is a deficient number, since it is larger than the sum of its proper divisors (13407).

23641213 is a wasteful number, since it uses less digits than its factorization.

23641213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13406.

The product of its digits is 864, while the sum is 22.

The square root of 23641213 is about 4862.2230512390. The cubic root of 23641213 is about 287.0053012493.

Adding to 23641213 its reverse (31214632), we get a palindrome (54855845).

The spelling of 23641213 in words is "twenty-three million, six hundred forty-one thousand, two hundred thirteen".