20224243431 has 16 divisors (see below), whose sum is σ = 34242105600. Its totient is φ = 11556710424.

The previous prime is 20224243423. The next prime is 20224243439. The reversal of 20224243431 is 13434242202.

20224243431 is a `hidden beast` number, since 2 + 0 + 224 + 2 + 4 + 3 + 431 = 666.

It is an interprime number because it is at equal distance from previous prime (20224243423) and next prime (20224243439).

It is not a de Polignac number, because 20224243431 - 2³ = 20224243423 is a prime.

It is a super-2 number, since 2×20224243431² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20224243395 and 20224243404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224243439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53503101 + ... + 53503478.

It is an arithmetic number, because the mean of its divisors is an integer number (2140131600).

Almost surely, 2^20224243431 is an apocalyptic number.

20224243431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20224243431 is a deficient number, since it is larger than the sum of its proper divisors (14017862169).

20224243431 is a wasteful number, since it uses less digits than its factorization.

20224243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107006595 (or 107006589 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20224243431 its reverse (13434242202), we get a palindrome (33658485633).

The spelling of 20224243431 in words is "twenty billion, two hundred twenty-four million, two hundred forty-three thousand, four hundred thirty-one".