1131111106 has 16 divisors (see below), whose sum is σ = 1705338360. Its totient is φ = 562671360.

The previous prime is 1131111101. The next prime is 1131111139. The reversal of 1131111106 is 6011111311.

It can be written as a sum of positive squares in 4 ways, for example, as 1106161081 + 24950025 = 33259^2 + 4995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1131111106.

It is not an unprimeable number, because it can be changed into a prime (1131111101) 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, 696976 + ... + 698596.

Almost surely, 2^1131111106 is an apocalyptic number.

1131111106 is a deficient number, since it is larger than the sum of its proper divisors (574227254).

1131111106 is a wasteful number, since it uses less digits than its factorization.

1131111106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1131111106 is about 33631.9952723593. The cubic root of 1131111106 is about 1041.9217137555.

Adding to 1131111106 its reverse (6011111311), we get a palindrome (7142222417).

The spelling of 1131111106 in words is "one billion, one hundred thirty-one million, one hundred eleven thousand, one hundred six".