1131019099 has 32 divisors (see below), whose sum is σ = 1393666560. Its totient is φ = 896313600.

The previous prime is 1131019091. The next prime is 1131019133. The reversal of 1131019099 is 9909101311.

It is not a de Polignac number, because 1131019099 - 2³ = 1131019091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131019091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1980484 + ... + 1981054.

It is an arithmetic number, because the mean of its divisors is an integer number (43552080).

Almost surely, 2^1131019099 is an apocalyptic number.

1131019099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1131019099 is a deficient number, since it is larger than the sum of its proper divisors (262647461).

1131019099 is a wasteful number, since it uses less digits than its factorization.

1131019099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 2187, while the sum is 34.

The square root of 1131019099 is about 33630.6273952777. The cubic root of 1131019099 is about 1041.8934622749.

The spelling of 1131019099 in words is "one billion, one hundred thirty-one million, nineteen thousand, ninety-nine".