1131131309 has 8 divisors (see below), whose sum is σ = 1410241728. Its totient is φ = 881400960.

The previous prime is 1131131299. The next prime is 1131131327. The reversal of 1131131309 is 9031311311.

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

It is not a de Polignac number, because 1131131309 - 2⁴ = 1131131293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7344932 + ... + 7345085.

It is an arithmetic number, because the mean of its divisors is an integer number (176280216).

Almost surely, 2^1131131309 is an apocalyptic number.

It is an amenable number.

1131131309 is a deficient number, since it is larger than the sum of its proper divisors (279110419).

1131131309 is a wasteful number, since it uses less digits than its factorization.

1131131309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14690035.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1131131309 is about 33632.2956248901. The cubic root of 1131131309 is about 1041.9279170421.

The spelling of 1131131309 in words is "one billion, one hundred thirty-one million, one hundred thirty-one thousand, three hundred nine".