103217999 has 4 divisors (see below), whose sum is σ = 109289664. Its totient is φ = 97146336.

The previous prime is 103217993. The next prime is 103218007. The reversal of 103217999 is 999712301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999712301 = 7 ⋅142816043.

It is a cyclic number.

It is not a de Polignac number, because 103217999 - 2²⁰ = 102169423 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 (103217993) 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 in 3 ways as a sum of consecutive naturals, for example, 3035807 + ... + 3035840.

It is an arithmetic number, because the mean of its divisors is an integer number (27322416).

Almost surely, 2^103217999 is an apocalyptic number.

103217999 is a deficient number, since it is larger than the sum of its proper divisors (6071665).

103217999 is an equidigital number, since it uses as much as digits as its factorization.

103217999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071664.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 103217999 is about 10159.6259281531. The cubic root of 103217999 is about 469.0852874902.

The spelling of 103217999 in words is "one hundred three million, two hundred seventeen thousand, nine hundred ninety-nine".