1131172118 has 16 divisors (see below), whose sum is σ = 1709700000. Its totient is φ = 561287232.

The previous prime is 1131172079. The next prime is 1131172123. The reversal of 1131172118 is 8112711311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159308 + ... + 166256.

It is an arithmetic number, because the mean of its divisors is an integer number (106856250).

Almost surely, 2^1131172118 is an apocalyptic number.

1131172118 is a deficient number, since it is larger than the sum of its proper divisors (578527882).

1131172118 is a wasteful number, since it uses less digits than its factorization.

1131172118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its digits is 336, while the sum is 26.

The square root of 1131172118 is about 33632.9023130624. The cubic root of 1131172118 is about 1041.9404471302.

Adding to 1131172118 its reverse (8112711311), we get a palindrome (9243883429).

The spelling of 1131172118 in words is "one billion, one hundred thirty-one million, one hundred seventy-two thousand, one hundred eighteen".