1131528017 has 4 divisors (see below), whose sum is σ = 1136223396. Its totient is φ = 1126832640.

The previous prime is 1131528011. The next prime is 1131528031. The reversal of 1131528017 is 7108251311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7108251311 = 7 ⋅1015464473.

It can be written as a sum of positive squares in 2 ways, for example, as 1001659201 + 129868816 = 31649^2 + 11396^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131528017 - 2¹⁰ = 1131526993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131528011) 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 3 ways as a sum of consecutive naturals, for example, 2347328 + ... + 2347809.

It is an arithmetic number, because the mean of its divisors is an integer number (284055849).

Almost surely, 2^1131528017 is an apocalyptic number.

It is an amenable number.

1131528017 is a deficient number, since it is larger than the sum of its proper divisors (4695379).

1131528017 is an equidigital number, since it uses as much as digits as its factorization.

1131528017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695378.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1131528017 is about 33638.1928319581. The cubic root of 1131528017 is about 1042.0497103960.

Adding to 1131528017 its reverse (7108251311), we get a palindrome (8239779328).

The spelling of 1131528017 in words is "one billion, one hundred thirty-one million, five hundred twenty-eight thousand, seventeen".