20100331143 has 64 divisors (see below), whose sum is σ = 32752512000. Its totient is φ = 12141537408.

The previous prime is 20100331117. The next prime is 20100331169. The reversal of 20100331143 is 34113300102.

It is an interprime number because it is at equal distance from previous prime (20100331117) and next prime (20100331169).

It is not a de Polignac number, because 20100331143 - 2⁹ = 20100330631 is a prime.

It is a super-3 number, since 3×20100331143³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100331103) 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 63 ways as a sum of consecutive naturals, for example, 943948 + ... + 965006.

It is an arithmetic number, because the mean of its divisors is an integer number (511758000).

Almost surely, 2^20100331143 is an apocalyptic number.

20100331143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20100331143 is a deficient number, since it is larger than the sum of its proper divisors (12652180857).

20100331143 is a wasteful number, since it uses less digits than its factorization.

20100331143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21173 (or 21167 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20100331143 its reverse (34113300102), we get a palindrome (54213631245).

The spelling of 20100331143 in words is "twenty billion, one hundred million, three hundred thirty-one thousand, one hundred forty-three".