1131543139 has 8 divisors (see below), whose sum is σ = 1164427920. Its totient is φ = 1098779616.

The previous prime is 1131543131. The next prime is 1131543169. The reversal of 1131543139 is 9313451311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131543139 - 2³ = 1131543131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131543139.

It is not an unprimeable number, because it can be changed into a prime (1131543131) 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, 11209 + ... + 48874.

It is an arithmetic number, because the mean of its divisors is an integer number (145553490).

Almost surely, 2^1131543139 is an apocalyptic number.

1131543139 is a deficient number, since it is larger than the sum of its proper divisors (32884781).

1131543139 is an equidigital number, since it uses as much as digits as its factorization.

1131543139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60629.

The product of its digits is 4860, while the sum is 31.

The square root of 1131543139 is about 33638.4176054701. The cubic root of 1131543139 is about 1042.0543524391.

The spelling of 1131543139 in words is "one billion, one hundred thirty-one million, five hundred forty-three thousand, one hundred thirty-nine".