20303431332 has 24 divisors (see below), whose sum is σ = 49434442176. Its totient is φ = 6473557728.

The previous prime is 20303431237. The next prime is 20303431339. The reversal of 20303431332 is 23313430302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20303431339) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36781303 + ... + 36781854.

It is an arithmetic number, because the mean of its divisors is an integer number (2059768424).

Almost surely, 2^20303431332 is an apocalyptic number.

It is an amenable number.

20303431332 is an abundant number, since it is smaller than the sum of its proper divisors (29131010844).

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

20303431332 is a wasteful number, since it uses less digits than its factorization.

20303431332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73563187 (or 73563185 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 20303431332 its reverse (23313430302), we get a palindrome (43616861634).

The spelling of 20303431332 in words is "twenty billion, three hundred three million, four hundred thirty-one thousand, three hundred thirty-two".