1131536215 has 8 divisors (see below), whose sum is σ = 1359230688. Its totient is φ = 904304160.

The previous prime is 1131536191. The next prime is 1131536243. The reversal of 1131536215 is 5126351311.

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

It is not a de Polignac number, because 1131536215 - 2¹⁹ = 1131011927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110196 + ... + 120025.

It is an arithmetic number, because the mean of its divisors is an integer number (169903836).

Almost surely, 2^1131536215 is an apocalyptic number.

1131536215 is a deficient number, since it is larger than the sum of its proper divisors (227694473).

1131536215 is an equidigital number, since it uses as much as digits as its factorization.

1131536215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231209.

The product of its digits is 2700, while the sum is 28.

The square root of 1131536215 is about 33638.3146872729. The cubic root of 1131536215 is about 1042.0522269644.

Adding to 1131536215 its reverse (5126351311), we get a palindrome (6257887526).

The spelling of 1131536215 in words is "one billion, one hundred thirty-one million, five hundred thirty-six thousand, two hundred fifteen".