20131422020 has 24 divisors (see below), whose sum is σ = 42278977944. Its totient is φ = 8051998976.

The previous prime is 20131422007. The next prime is 20131422071. The reversal of 20131422020 is 2022413102.

It can be written as a sum of positive squares in 4 ways, for example, as 131239936 + 20000182084 = 11456^2 + 141422^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20131422020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362762 + ... + 414558.

It is an arithmetic number, because the mean of its divisors is an integer number (1761624081).

Almost surely, 2^20131422020 is an apocalyptic number.

20131422020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131422020 is an abundant number, since it is smaller than the sum of its proper divisors (22147555924).

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

20131422020 is a wasteful number, since it uses less digits than its factorization.

20131422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71239 (or 71237 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20131422020 its reverse (2022413102), we get a palindrome (22153835122).

The spelling of 20131422020 in words is "twenty billion, one hundred thirty-one million, four hundred twenty-two thousand, twenty".