108905317 has 4 divisors (see below), whose sum is σ = 108948256. Its totient is φ = 108862380.

The previous prime is 108905311. The next prime is 108905323. The reversal of 108905317 is 713509801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713509801 = 1973 ⋅361637.

It is an interprime number because it is at equal distance from previous prime (108905311) and next prime (108905323).

It is a cyclic number.

It is not a de Polignac number, because 108905317 - 2³ = 108905309 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 (108905311) 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, 17409 + ... + 22822.

It is an arithmetic number, because the mean of its divisors is an integer number (27237064).

Almost surely, 2^108905317 is an apocalyptic number.

It is an amenable number.

108905317 is a deficient number, since it is larger than the sum of its proper divisors (42939).

108905317 is an equidigital number, since it uses as much as digits as its factorization.

108905317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42938.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 108905317 is about 10435.7710304510. The cubic root of 108905317 is about 477.5472639454.

The spelling of 108905317 in words is "one hundred eight million, nine hundred five thousand, three hundred seventeen".