109528143 has 4 divisors (see below), whose sum is σ = 146037528. Its totient is φ = 73018760.

The previous prime is 109528129. The next prime is 109528151. The reversal of 109528143 is 341825901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341825901 = 3 ⋅113941967.

It is a cyclic number.

It is not a de Polignac number, because 109528143 - 2¹⁶ = 109462607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109528163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18254688 + ... + 18254693.

It is an arithmetic number, because the mean of its divisors is an integer number (36509382).

Almost surely, 2^109528143 is an apocalyptic number.

109528143 is a deficient number, since it is larger than the sum of its proper divisors (36509385).

109528143 is an equidigital number, since it uses as much as digits as its factorization.

109528143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36509384.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 109528143 is about 10465.5694063916. The cubic root of 109528143 is about 478.4558931402.

The spelling of 109528143 in words is "one hundred nine million, five hundred twenty-eight thousand, one hundred forty-three".