22305131 has 4 divisors (see below), whose sum is σ = 22314600. Its totient is φ = 22295664.

The previous prime is 22305109. The next prime is 22305133. The reversal of 22305131 is 13150322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13150322 = 2 ⋅6575161.

It is a cyclic number.

It is not a de Polignac number, because 22305131 - 2⁶ = 22305067 is a prime.

It is a super-2 number, since 2×22305131² = 995037737854322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22305133) 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, 1880 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (5578650).

Almost surely, 2^22305131 is an apocalyptic number.

22305131 is a deficient number, since it is larger than the sum of its proper divisors (9469).

22305131 is an equidigital number, since it uses as much as digits as its factorization.

22305131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 22305131 is about 4722.8308248338. The cubic root of 22305131 is about 281.4934277002.

Adding to 22305131 its reverse (13150322), we get a palindrome (35455453).

The spelling of 22305131 in words is "twenty-two million, three hundred five thousand, one hundred thirty-one".