22644131 has 2 divisors, whose sum is σ = 22644132. Its totient is φ = 22644130.

The previous prime is 22644107. The next prime is 22644137. The reversal of 22644131 is 13144622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22644131 is a prime.

It is a super-2 number, since 2×22644131² = 1025513337490322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22644097 and 22644106.

It is not a weakly prime, because it can be changed into another prime (22644137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322065 + 11322066.

It is an arithmetic number, because the mean of its divisors is an integer number (11322066).

Almost surely, 2^22644131 is an apocalyptic number.

22644131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22644131 is an equidigital number, since it uses as much as digits as its factorization.

22644131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 22644131 is about 4758.5849787516. The cubic root of 22644131 is about 282.9123370096.

Adding to 22644131 its reverse (13144622), we get a palindrome (35788753).

The spelling of 22644131 in words is "twenty-two million, six hundred forty-four thousand, one hundred thirty-one".