1080831387 has 8 divisors (see below), whose sum is σ = 1503765504. Its totient is φ = 689225768.

The previous prime is 1080831379. The next prime is 1080831419. The reversal of 1080831387 is 7831380801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1080831387 - 2³ = 1080831379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1080831307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7832043 + ... + 7832180.

It is an arithmetic number, because the mean of its divisors is an integer number (187970688).

Almost surely, 2^1080831387 is an apocalyptic number.

1080831387 is a deficient number, since it is larger than the sum of its proper divisors (422934117).

1080831387 is a wasteful number, since it uses less digits than its factorization.

1080831387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15664249.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1080831387 is about 32876.0001672953. Note that the first 3 decimals coincide. The cubic root of 1080831387 is about 1026.2487693266.

It can be divided in two parts, 10808 and 31387, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 1080831387 in words is "one billion, eighty million, eight hundred thirty-one thousand, three hundred eighty-seven".