109541623 has 2 divisors, whose sum is σ = 109541624. Its totient is φ = 109541622.

The previous prime is 109541599. The next prime is 109541651. The reversal of 109541623 is 326145901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109541623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109541123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54770811 + 54770812.

It is an arithmetic number, because the mean of its divisors is an integer number (54770812).

Almost surely, 2^109541623 is an apocalyptic number.

109541623 is a deficient number, since it is larger than the sum of its proper divisors (1).

109541623 is an equidigital number, since it uses as much as digits as its factorization.

109541623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 109541623 is about 10466.2134031368. The cubic root of 109541623 is about 478.4755207315.

The spelling of 109541623 in words is "one hundred nine million, five hundred forty-one thousand, six hundred twenty-three".