1131133145 has 8 divisors (see below), whose sum is σ = 1358311680. Its totient is φ = 904271920.

The previous prime is 1131133127. The next prime is 1131133147. The reversal of 1131133145 is 5413311311.

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

It is not a de Polignac number, because 1131133145 - 2¹⁴ = 1131116761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131133145.

It is not an unprimeable number, because it can be changed into a prime (1131133147) 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, 71411 + ... + 85800.

It is an arithmetic number, because the mean of its divisors is an integer number (169788960).

Almost surely, 2^1131133145 is an apocalyptic number.

It is an amenable number.

1131133145 is a deficient number, since it is larger than the sum of its proper divisors (227178535).

1131133145 is a wasteful number, since it uses less digits than its factorization.

1131133145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158655.

The product of its digits is 540, while the sum is 23.

The square root of 1131133145 is about 33632.3229200720. The cubic root of 1131133145 is about 1041.9284807782.

Adding to 1131133145 its reverse (5413311311), we get a palindrome (6544444456).

The spelling of 1131133145 in words is "one billion, one hundred thirty-one million, one hundred thirty-three thousand, one hundred forty-five".