22040340231 has 16 divisors (see below), whose sum is σ = 36168763904. Its totient is φ = 11625673824.

The previous prime is 22040340221. The next prime is 22040340247. The reversal of 22040340231 is 13204304022.

It is not a de Polignac number, because 22040340231 - 2¹⁸ = 22040078087 is a prime.

It is a super-2 number, since 2×22040340231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22040340198 and 22040340207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040340221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40366651 + ... + 40367196.

It is an arithmetic number, because the mean of its divisors is an integer number (2260547744).

Almost surely, 2^22040340231 is an apocalyptic number.

22040340231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22040340231 is a deficient number, since it is larger than the sum of its proper divisors (14128423673).

22040340231 is a wasteful number, since it uses less digits than its factorization.

22040340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80733870.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22040340231 its reverse (13204304022), we get a palindrome (35244644253).

The spelling of 22040340231 in words is "twenty-two billion, forty million, three hundred forty thousand, two hundred thirty-one".