1011106681 has 8 divisors (see below), whose sum is σ = 1089140360. Its totient is φ = 933109632.

The previous prime is 1011106673. The next prime is 1011106727. The reversal of 1011106681 is 1866011101.

It can be written as a sum of positive squares in 4 ways, for example, as 286151056 + 724955625 = 16916^2 + 26925^2 .

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

It is not a de Polignac number, because 1011106681 - 2³ = 1011106673 is a prime.

It is a super-2 number, since 2×1011106681² = 2044673440725671522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011106651) 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, 81421 + ... + 93013.

It is an arithmetic number, because the mean of its divisors is an integer number (136142545).

Almost surely, 2^1011106681 is an apocalyptic number.

It is an amenable number.

1011106681 is a deficient number, since it is larger than the sum of its proper divisors (78033679).

1011106681 is a wasteful number, since it uses less digits than its factorization.

1011106681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18315.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1011106681 is about 31797.9037202140. The cubic root of 1011106681 is about 1003.6886044683.

Adding to 1011106681 its reverse (1866011101), we get a palindrome (2877117782).

The spelling of 1011106681 in words is "one billion, eleven million, one hundred six thousand, six hundred eighty-one".