109131599 has 2 divisors, whose sum is σ = 109131600. Its totient is φ = 109131598.

The previous prime is 109131577. The next prime is 109131641. The reversal of 109131599 is 995131901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109131599 - 2²⁰ = 108083023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109161599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54565799 + 54565800.

It is an arithmetic number, because the mean of its divisors is an integer number (54565800).

Almost surely, 2^109131599 is an apocalyptic number.

109131599 is a deficient number, since it is larger than the sum of its proper divisors (1).

109131599 is an equidigital number, since it uses as much as digits as its factorization.

109131599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 38.

The square root of 109131599 is about 10446.6070568391. The cubic root of 109131599 is about 477.8777822253.

The spelling of 109131599 in words is "one hundred nine million, one hundred thirty-one thousand, five hundred ninety-nine".