20331432143 has 8 divisors (see below), whose sum is σ = 22944563280. Its totient is φ = 17845770880.

The previous prime is 20331432113. The next prime is 20331432157. The reversal of 20331432143 is 34123413302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331432143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331432103) 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 7 ways as a sum of consecutive naturals, for example, 31867130 + ... + 31867767.

It is an arithmetic number, because the mean of its divisors is an integer number (2868070410).

Almost surely, 2^20331432143 is an apocalyptic number.

20331432143 is a deficient number, since it is larger than the sum of its proper divisors (2613131137).

20331432143 is a wasteful number, since it uses less digits than its factorization.

20331432143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63734937.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20331432143 its reverse (34123413302), we get a palindrome (54454845445).

The spelling of 20331432143 in words is "twenty billion, three hundred thirty-one million, four hundred thirty-two thousand, one hundred forty-three".