22431440031 has 64 divisors (see below), whose sum is σ = 40280088576. Its totient is φ = 10723363200.

The previous prime is 22431440027. The next prime is 22431440099. The reversal of 22431440031 is 13004413422.

It is not a de Polignac number, because 22431440031 - 2² = 22431440027 is a prime.

It is a super-2 number, since 2×22431440031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22431439983 and 22431440010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431440131) 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 63 ways as a sum of consecutive naturals, for example, 982710 + ... + 1005276.

It is an arithmetic number, because the mean of its divisors is an integer number (629376384).

Almost surely, 2^22431440031 is an apocalyptic number.

22431440031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22431440031 is a deficient number, since it is larger than the sum of its proper divisors (17848648545).

22431440031 is a wasteful number, since it uses less digits than its factorization.

22431440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22932.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 22431440031 its reverse (13004413422), we get a palindrome (35435853453).

The spelling of 22431440031 in words is "twenty-two billion, four hundred thirty-one million, four hundred forty thousand, thirty-one".