22431312311 has 4 divisors (see below), whose sum is σ = 22431711000. Its totient is φ = 22430913624.

The previous prime is 22431312251. The next prime is 22431312317. The reversal of 22431312311 is 11321313422.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22431312311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431312317) 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, 97661 + ... + 233238.

It is an arithmetic number, because the mean of its divisors is an integer number (5607927750).

Almost surely, 2^22431312311 is an apocalyptic number.

22431312311 is a deficient number, since it is larger than the sum of its proper divisors (398689).

22431312311 is an equidigital number, since it uses as much as digits as its factorization.

22431312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398688.

The product of its digits is 864, while the sum is 23.

Adding to 22431312311 its reverse (11321313422), we get a palindrome (33752625733).

The spelling of 22431312311 in words is "twenty-two billion, four hundred thirty-one million, three hundred twelve thousand, three hundred eleven".