123441213 has 32 divisors (see below), whose sum is σ = 195727360. Its totient is φ = 67728960.

The previous prime is 123441203. The next prime is 123441217. The reversal of 123441213 is 312144321.

It is not a de Polignac number, because 123441213 - 2⁵ = 123441181 is a prime.

It is a super-2 number, since 2×123441213² = 30475466133822738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123441213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123441217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60378 + ... + 62388.

It is an arithmetic number, because the mean of its divisors is an integer number (6116480).

Almost surely, 2^123441213 is an apocalyptic number.

It is an amenable number.

123441213 is a deficient number, since it is larger than the sum of its proper divisors (72286147).

123441213 is a wasteful number, since it uses less digits than its factorization.

123441213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 576, while the sum is 21.

The square root of 123441213 is about 11110.4101184430. The cubic root of 123441213 is about 497.9129176292.

Adding to 123441213 its reverse (312144321), we get a palindrome (435585534).

The spelling of 123441213 in words is "one hundred twenty-three million, four hundred forty-one thousand, two hundred thirteen".