22103131 has 2 divisors, whose sum is σ = 22103132. Its totient is φ = 22103130.

The previous prime is 22103119. The next prime is 22103197. The reversal of 22103131 is 13130122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22103131 - 2¹¹ = 22101083 is a prime.

It is a super-2 number, since 2×22103131² = 977096800006322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22103831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051565 + 11051566.

It is an arithmetic number, because the mean of its divisors is an integer number (11051566).

Almost surely, 2^22103131 is an apocalyptic number.

22103131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22103131 is an equidigital number, since it uses as much as digits as its factorization.

22103131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 22103131 is about 4701.3967073626. The cubic root of 22103131 is about 280.6410947890.

Adding to 22103131 its reverse (13130122), we get a palindrome (35233253).

The spelling of 22103131 in words is "twenty-two million, one hundred three thousand, one hundred thirty-one".