22431324031 has 4 divisors (see below), whose sum is σ = 22531913152. Its totient is φ = 22330734912.

The previous prime is 22431324029. The next prime is 22431324053. The reversal of 22431324031 is 13042313422.

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 22431324031 - 2¹ = 22431324029 is a prime.

It is a super-2 number, since 2×22431324031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22431323987 and 22431324005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431324001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50294226 + ... + 50294671.

It is an arithmetic number, because the mean of its divisors is an integer number (5632978288).

Almost surely, 2^22431324031 is an apocalyptic number.

22431324031 is a deficient number, since it is larger than the sum of its proper divisors (100589121).

22431324031 is a wasteful number, since it uses less digits than its factorization.

22431324031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100589120.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22431324031 its reverse (13042313422), we get a palindrome (35473637453).

The spelling of 22431324031 in words is "twenty-two billion, four hundred thirty-one million, three hundred twenty-four thousand, thirty-one".