1086871831 has 16 divisors (see below), whose sum is σ = 1192512960. Its totient is φ = 987275520.

The previous prime is 1086871823. The next prime is 1086871853. The reversal of 1086871831 is 1381786801.

It is a cyclic number.

It is not a de Polignac number, because 1086871831 - 2³ = 1086871823 is a prime.

It is a super-2 number, since 2×1086871831² = 2362580754042585122, 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 (1086871631) 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, 27331 + ... + 54043.

It is an arithmetic number, because the mean of its divisors is an integer number (74532060).

Almost surely, 2^1086871831 is an apocalyptic number.

1086871831 is a deficient number, since it is larger than the sum of its proper divisors (105641129).

1086871831 is a wasteful number, since it uses less digits than its factorization.

1086871831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26826.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 1086871831 is about 32967.7392461176. The cubic root of 1086871831 is about 1028.1570181989.

The spelling of 1086871831 in words is "one billion, eighty-six million, eight hundred seventy-one thousand, eight hundred thirty-one".