20131132434 has 32 divisors (see below), whose sum is σ = 48435809280. Its totient is φ = 5449028112.

The previous prime is 20131132423. The next prime is 20131132451. The reversal of 20131132434 is 43423113102.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12612694 + ... + 12614289.

It is an arithmetic number, because the mean of its divisors is an integer number (1513619040).

Almost surely, 2^20131132434 is an apocalyptic number.

20131132434 is an abundant number, since it is smaller than the sum of its proper divisors (28304676846).

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

20131132434 is a wasteful number, since it uses less digits than its factorization.

20131132434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25227014.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20131132434 its reverse (43423113102), we get a palindrome (63554245536).

The spelling of 20131132434 in words is "twenty billion, one hundred thirty-one million, one hundred thirty-two thousand, four hundred thirty-four".