108319491 has 16 divisors (see below), whose sum is σ = 183398400. Its totient is φ = 61896744.

The previous prime is 108319483. The next prime is 108319493. The reversal of 108319491 is 194913801.

It is not a de Polignac number, because 108319491 - 2³ = 108319483 is a prime.

It is a super-2 number, since 2×108319491² = 23466224260998162, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (108319493) 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 in 15 ways as a sum of consecutive naturals, for example, 286371 + ... + 286748.

It is an arithmetic number, because the mean of its divisors is an integer number (11462400).

Almost surely, 2^108319491 is an apocalyptic number.

108319491 is a deficient number, since it is larger than the sum of its proper divisors (75078909).

108319491 is an equidigital number, since it uses as much as digits as its factorization.

108319491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573135 (or 573129 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 108319491 is about 10407.6650119035. The cubic root of 108319491 is about 476.6894462084.

It can be divided in two parts, 1083 and 19491, that multiplied together give a triangular number (21108753 = T₆₄₉₇).

The spelling of 108319491 in words is "one hundred eight million, three hundred nineteen thousand, four hundred ninety-one".