103691089 has 2 divisors, whose sum is σ = 103691090. Its totient is φ = 103691088.

The previous prime is 103691087. The next prime is 103691101. The reversal of 103691089 is 980196301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55249489 + 48441600 = 7433^2 + 6960^2 .

It is a cyclic number.

It is not a de Polignac number, because 103691089 - 2¹ = 103691087 is a prime.

Together with 103691087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103691087) 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 as a sum of consecutive naturals, namely, 51845544 + 51845545.

It is an arithmetic number, because the mean of its divisors is an integer number (51845545).

Almost surely, 2^103691089 is an apocalyptic number.

It is an amenable number.

103691089 is a deficient number, since it is larger than the sum of its proper divisors (1).

103691089 is an equidigital number, since it uses as much as digits as its factorization.

103691089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 103691089 is about 10182.8821558535. The cubic root of 103691089 is about 469.8008647874.

The spelling of 103691089 in words is "one hundred three million, six hundred ninety-one thousand, eighty-nine".