20104431132 has 48 divisors (see below), whose sum is σ = 50003200800. Its totient is φ = 6264932352.

The previous prime is 20104431131. The next prime is 20104431133. The reversal of 20104431132 is 23113440102.

It is an interprime number because it is at equal distance from previous prime (20104431131) and next prime (20104431133).

It is a super-2 number, since 2×20104431132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20104431099 and 20104431108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104431131) 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, 300313 + ... + 361104.

It is an arithmetic number, because the mean of its divisors is an integer number (1041733350).

Almost surely, 2^20104431132 is an apocalyptic number.

It is an amenable number.

20104431132 is an abundant number, since it is smaller than the sum of its proper divisors (29898769668).

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

20104431132 is a wasteful number, since it uses less digits than its factorization.

20104431132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661590 (or 661588 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20104431132 its reverse (23113440102), we get a palindrome (43217871234).

The spelling of 20104431132 in words is "twenty billion, one hundred four million, four hundred thirty-one thousand, one hundred thirty-two".