100543131 has 24 divisors (see below), whose sum is σ = 156863616. Its totient is φ = 61689600.

The previous prime is 100543123. The next prime is 100543169. The reversal of 100543131 is 131345001.

It is not a de Polignac number, because 100543131 - 2³ = 100543123 is a prime.

It is a super-2 number, since 2×100543131² = 20217842382566322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100543181) 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 23 ways as a sum of consecutive naturals, for example, 45846 + ... + 47988.

It is an arithmetic number, because the mean of its divisors is an integer number (6535984).

Almost surely, 2^100543131 is an apocalyptic number.

100543131 is a deficient number, since it is larger than the sum of its proper divisors (56320485).

100543131 is a wasteful number, since it uses less digits than its factorization.

100543131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 100543131 is about 10027.1197758878. The cubic root of 100543131 is about 464.9976968322.

Adding to 100543131 its reverse (131345001), we get a palindrome (231888132).

The spelling of 100543131 in words is "one hundred million, five hundred forty-three thousand, one hundred thirty-one".