22131413 has 4 divisors (see below), whose sum is σ = 22253868. Its totient is φ = 22008960.

The previous prime is 22131397. The next prime is 22131443. The reversal of 22131413 is 31413122.

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 7941124 + 14190289 = 2818^2 + 3767^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131413 - 2⁴ = 22131397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131391 and 22131400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60956 + ... + 61317.

It is an arithmetic number, because the mean of its divisors is an integer number (5563467).

Almost surely, 2^22131413 is an apocalyptic number.

It is an amenable number.

22131413 is a deficient number, since it is larger than the sum of its proper divisors (122455).

22131413 is a wasteful number, since it uses less digits than its factorization.

22131413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122454.

The product of its digits is 144, while the sum is 17.

The square root of 22131413 is about 4704.4035753749. The cubic root of 22131413 is about 280.7607416173.

Adding to 22131413 its reverse (31413122), we get a palindrome (53544535).

The spelling of 22131413 in words is "twenty-two million, one hundred thirty-one thousand, four hundred thirteen".