20431342422 has 48 divisors (see below), whose sum is σ = 46914960240. Its totient is φ = 6590738880.

The previous prime is 20431342369. The next prime is 20431342429. The reversal of 20431342422 is 22424313402.

20431342422 is a `hidden beast` number, since 204 + 3 + 1 + 34 + 2 + 422 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431342429) 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 23 ways as a sum of consecutive naturals, for example, 144963 + ... + 248750.

It is an arithmetic number, because the mean of its divisors is an integer number (977395005).

Almost surely, 2^20431342422 is an apocalyptic number.

20431342422 is an abundant number, since it is smaller than the sum of its proper divisors (26483617818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20431342422 is a wasteful number, since it uses less digits than its factorization.

20431342422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393786 (or 393749 counting only the distinct ones).

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

Adding to 20431342422 its reverse (22424313402), we get a palindrome (42855655824).

The spelling of 20431342422 in words is "twenty billion, four hundred thirty-one million, three hundred forty-two thousand, four hundred twenty-two".