100531143 has 6 divisors (see below), whose sum is σ = 145211664. Its totient is φ = 67020756.

The previous prime is 100531127. The next prime is 100531153. The reversal of 100531143 is 341135001.

It is not a de Polignac number, because 100531143 - 2⁴ = 100531127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100531153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5585055 + ... + 5585072.

It is an arithmetic number, because the mean of its divisors is an integer number (24201944).

Almost surely, 2^100531143 is an apocalyptic number.

100531143 is a deficient number, since it is larger than the sum of its proper divisors (44680521).

100531143 is a wasteful number, since it uses less digits than its factorization.

100531143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11170133 (or 11170130 counting only the distinct ones).

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

The square root of 100531143 is about 10026.5219792309. The cubic root of 100531143 is about 464.9792151653.

Adding to 100531143 its reverse (341135001), we get a palindrome (441666144).

The spelling of 100531143 in words is "one hundred million, five hundred thirty-one thousand, one hundred forty-three".