20422001431431 has 24 divisors (see below), whose sum is σ = 29525745666560. Its totient is φ = 13602073334976.

The previous prime is 20422001431427. The next prime is 20422001431439. The reversal of 20422001431431 is 13413410022402.

20422001431431 is a `hidden beast` number, since 2 + 0 + 4 + 220 + 0 + 1 + 4 + 3 + 1 + 431 = 666.

It is not a de Polignac number, because 20422001431431 - 2² = 20422001431427 is a prime.

It is a super-2 number, since 2×20422001431431² (a number of 27 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 = 20422001431395 and 20422001431404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422001431439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46312965 + ... + 46751841.

Almost surely, 2^{20422001431431} is an apocalyptic number.

20422001431431 is a deficient number, since it is larger than the sum of its proper divisors (9103744235129).

20422001431431 is a wasteful number, since it uses less digits than its factorization.

20422001431431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443655 (or 443652 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20422001431431 its reverse (13413410022402), we get a palindrome (33835411453833).

The spelling of 20422001431431 in words is "twenty trillion, four hundred twenty-two billion, one million, four hundred thirty-one thousand, four hundred thirty-one".