20431431022 has 8 divisors (see below), whose sum is σ = 30647892096. Its totient is φ = 10215466992.

The previous prime is 20431430993. The next prime is 20431431029. The reversal of 20431431022 is 22013413402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20431430984 and 20431431002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431431029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5683 + ... + 202225.

It is an arithmetic number, because the mean of its divisors is an integer number (3830986512).

Almost surely, 2^20431431022 is an apocalyptic number.

20431431022 is a deficient number, since it is larger than the sum of its proper divisors (10216461074).

20431431022 is a wasteful number, since it uses less digits than its factorization.

20431431022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248522.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20431431022 its reverse (22013413402), we get a palindrome (42444844424).

The spelling of 20431431022 in words is "twenty billion, four hundred thirty-one million, four hundred thirty-one thousand, twenty-two".