22431220311 has 32 divisors (see below), whose sum is σ = 30789808128. Its totient is φ = 14521177440.

The previous prime is 22431220307. The next prime is 22431220313. The reversal of 22431220311 is 11302213422.

It is not a de Polignac number, because 22431220311 - 2² = 22431220307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431220313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4535506 + ... + 4540448.

It is an arithmetic number, because the mean of its divisors is an integer number (962181504).

Almost surely, 2^22431220311 is an apocalyptic number.

22431220311 is a deficient number, since it is larger than the sum of its proper divisors (8358587817).

22431220311 is a wasteful number, since it uses less digits than its factorization.

22431220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22431220311 its reverse (11302213422), we get a palindrome (33733433733).

The spelling of 22431220311 in words is "twenty-two billion, four hundred thirty-one million, two hundred twenty thousand, three hundred eleven".