108605831 has 4 divisors (see below), whose sum is σ = 111131592. Its totient is φ = 106080072.

The previous prime is 108605821. The next prime is 108605837. The reversal of 108605831 is 138506801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138506801 = 1723 ⋅80387.

It is a cyclic number.

It is not a de Polignac number, because 108605831 - 2¹⁰ = 108604807 is a prime.

It is a super-2 number, since 2×108605831² = 23590453054401122, 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 (108605837) 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, 1262816 + ... + 1262901.

It is an arithmetic number, because the mean of its divisors is an integer number (27782898).

Almost surely, 2^108605831 is an apocalyptic number.

108605831 is a deficient number, since it is larger than the sum of its proper divisors (2525761).

108605831 is an equidigital number, since it uses as much as digits as its factorization.

108605831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525760.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 108605831 is about 10421.4121403963. The cubic root of 108605831 is about 477.1091157038.

The spelling of 108605831 in words is "one hundred eight million, six hundred five thousand, eight hundred thirty-one".