108431687 has 16 divisors (see below), whose sum is σ = 135152640. Its totient is φ = 84700512.

The previous prime is 108431677. The next prime is 108431723. The reversal of 108431687 is 786134801.

It is not a de Polignac number, because 108431687 - 2⁶ = 108431623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108431687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108431647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353 + ... + 14730.

It is an arithmetic number, because the mean of its divisors is an integer number (8447040).

Almost surely, 2^108431687 is an apocalyptic number.

108431687 is a deficient number, since it is larger than the sum of its proper divisors (26720953).

108431687 is a wasteful number, since it uses less digits than its factorization.

108431687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15182.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 108431687 is about 10413.0536827580. The cubic root of 108431687 is about 476.8539724437.

The spelling of 108431687 in words is "one hundred eight million, four hundred thirty-one thousand, six hundred eighty-seven".