1135270217 has 4 divisors (see below), whose sum is σ = 1202050836. Its totient is φ = 1068489600.

The previous prime is 1135270139. The next prime is 1135270237. The reversal of 1135270217 is 7120725311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7120725311 = 7 ⋅1017246473.

It can be written as a sum of positive squares in 2 ways, for example, as 538982656 + 596287561 = 23216^2 + 24419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135270217 - 2²⁴ = 1118493001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1135270217.

It is not an unprimeable number, because it can be changed into a prime (1135270237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33390284 + ... + 33390317.

It is an arithmetic number, because the mean of its divisors is an integer number (300512709).

Almost surely, 2^1135270217 is an apocalyptic number.

1135270217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1135270217 is a deficient number, since it is larger than the sum of its proper divisors (66780619).

1135270217 is an equidigital number, since it uses as much as digits as its factorization.

1135270217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66780618.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 1135270217 is about 33693.7711899395. The cubic root of 1135270217 is about 1043.1972051593.

Adding to 1135270217 its reverse (7120725311), we get a palindrome (8255995528).

The spelling of 1135270217 in words is "one billion, one hundred thirty-five million, two hundred seventy thousand, two hundred seventeen".