109561343 has 4 divisors (see below), whose sum is σ = 109758600. Its totient is φ = 109364088.

The previous prime is 109561321. The next prime is 109561357. The reversal of 109561343 is 343165901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109561343 - 2¹⁶ = 109495807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109561303) 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, 97793 + ... + 98906.

It is an arithmetic number, because the mean of its divisors is an integer number (27439650).

Almost surely, 2^109561343 is an apocalyptic number.

109561343 is a deficient number, since it is larger than the sum of its proper divisors (197257).

109561343 is an equidigital number, since it uses as much as digits as its factorization.

109561343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197256.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 109561343 is about 10467.1554397553. The cubic root of 109561343 is about 478.5042311914.

The spelling of 109561343 in words is "one hundred nine million, five hundred sixty-one thousand, three hundred forty-three".