100091143 has 4 divisors (see below), whose sum is σ = 102418888. Its totient is φ = 97763400.

The previous prime is 100091137. The next prime is 100091149. The reversal of 100091143 is 341190001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341190001 = 659 ⋅517739.

It is an interprime number because it is at equal distance from previous prime (100091137) and next prime (100091149).

It is a cyclic number.

It is not a de Polignac number, because 100091143 - 2²⁵ = 66536711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100091143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100091149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163808 + ... + 1163893.

It is an arithmetic number, because the mean of its divisors is an integer number (25604722).

Almost surely, 2^100091143 is an apocalyptic number.

100091143 is a deficient number, since it is larger than the sum of its proper divisors (2327745).

100091143 is an equidigital number, since it uses as much as digits as its factorization.

100091143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327744.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 100091143 is about 10004.5561120921. The cubic root of 100091143 is about 464.2998566512.

The spelling of 100091143 in words is "one hundred million, ninety-one thousand, one hundred forty-three".