1131141165 has 32 divisors (see below), whose sum is σ = 2256408576. Its totient is φ = 470084160.

The previous prime is 1131141161. The next prime is 1131141217. The reversal of 1131141165 is 5611411311.

1131141165 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1131141165 - 2² = 1131141161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131141161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488517 + ... + 490826.

It is an arithmetic number, because the mean of its divisors is an integer number (70512768).

Almost surely, 2^1131141165 is an apocalyptic number.

1131141165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131141165 is a deficient number, since it is larger than the sum of its proper divisors (1125267411).

1131141165 is a wasteful number, since it uses less digits than its factorization.

1131141165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979369.

The product of its digits is 360, while the sum is 24.

The square root of 1131141165 is about 33632.4421504000. The cubic root of 1131141165 is about 1041.9309432783.

Adding to 1131141165 its reverse (5611411311), we get a palindrome (6742552476).

The spelling of 1131141165 in words is "one billion, one hundred thirty-one million, one hundred forty-one thousand, one hundred sixty-five".