22113312331 has 4 divisors (see below), whose sum is σ = 24123613464. Its totient is φ = 20103011200.

The previous prime is 22113312323. The next prime is 22113312437. The reversal of 22113312331 is 13321331122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22113312331 - 2³ = 22113312323 is a prime.

It is a super-2 number, since 2×22113312331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22113312131) 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 3 ways as a sum of consecutive naturals, for example, 1005150550 + ... + 1005150571.

It is an arithmetic number, because the mean of its divisors is an integer number (6030903366).

Almost surely, 2^22113312331 is an apocalyptic number.

22113312331 is a deficient number, since it is larger than the sum of its proper divisors (2010301133).

22113312331 is a wasteful number, since it uses less digits than its factorization.

22113312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010301132.

The product of its digits is 648, while the sum is 22.

Adding to 22113312331 its reverse (13321331122), we get a palindrome (35434643453).

The spelling of 22113312331 in words is "twenty-two billion, one hundred thirteen million, three hundred twelve thousand, three hundred thirty-one".