108436381 has 4 divisors (see below), whose sum is σ = 111367132. Its totient is φ = 105505632.

The previous prime is 108436373. The next prime is 108436399. The reversal of 108436381 is 183634801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86025625 + 22410756 = 9275^2 + 4734^2 .

It is a cyclic number.

It is not a de Polignac number, because 108436381 - 2³ = 108436373 is a prime.

It is a super-2 number, since 2×108436381² = 23516897448754322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108436331) 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, 1465320 + ... + 1465393.

It is an arithmetic number, because the mean of its divisors is an integer number (27841783).

Almost surely, 2^108436381 is an apocalyptic number.

It is an amenable number.

108436381 is a deficient number, since it is larger than the sum of its proper divisors (2930751).

108436381 is an equidigital number, since it uses as much as digits as its factorization.

108436381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930750.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 108436381 is about 10413.2790704946. The cubic root of 108436381 is about 476.8608533359.

The spelling of 108436381 in words is "one hundred eight million, four hundred thirty-six thousand, three hundred eighty-one".