1131153515 has 16 divisors (see below), whose sum is σ = 1373453280. Its totient is φ = 894270720.

The previous prime is 1131153511. The next prime is 1131153523. The reversal of 1131153515 is 5153511311.

It is not a de Polignac number, because 1131153515 - 2² = 1131153511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131153511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153260 + ... + 160470.

It is an arithmetic number, because the mean of its divisors is an integer number (85840830).

Almost surely, 2^1131153515 is an apocalyptic number.

1131153515 is a deficient number, since it is larger than the sum of its proper divisors (242299765).

1131153515 is a wasteful number, since it uses less digits than its factorization.

1131153515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7582.

The product of its digits is 1125, while the sum is 26.

The square root of 1131153515 is about 33632.6257523851. The cubic root of 1131153515 is about 1041.9347352602.

Adding to 1131153515 its reverse (5153511311), we get a palindrome (6284664826).

The spelling of 1131153515 in words is "one billion, one hundred thirty-one million, one hundred fifty-three thousand, five hundred fifteen".