22131403 has 4 divisors (see below), whose sum is σ = 25293040. Its totient is φ = 18969768.

The previous prime is 22131397. The next prime is 22131443. The reversal of 22131403 is 30413122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30413122 = 2 ⋅15206561.

It is a cyclic number.

It is not a de Polignac number, because 22131403 - 2⁹ = 22130891 is a prime.

It is a Duffinian 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, 1580808 + ... + 1580821.

It is an arithmetic number, because the mean of its divisors is an integer number (6323260).

Almost surely, 2^22131403 is an apocalyptic number.

22131403 is a deficient number, since it is larger than the sum of its proper divisors (3161637).

22131403 is an equidigital number, since it uses as much as digits as its factorization.

22131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161636.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22131403 is about 4704.4025125408. The cubic root of 22131403 is about 280.7606993303.

Adding to 22131403 its reverse (30413122), we get a palindrome (52544525).

The spelling of 22131403 in words is "twenty-two million, one hundred thirty-one thousand, four hundred three".