1131217 has 2 divisors, whose sum is σ = 1131218. Its totient is φ = 1131216.

The previous prime is 1131191. The next prime is 1131223. The reversal of 1131217 is 7121311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008016 + 123201 = 1004^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131217 - 2¹¹ = 1129169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131217.

It is not a weakly prime, because it can be changed into another prime (1131617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565608 + 565609.

It is an arithmetic number, because the mean of its divisors is an integer number (565609).

2^1131217 is an apocalyptic number.

It is an amenable number.

1131217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131217 is an equidigital number, since it uses as much as digits as its factorization.

1131217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 16.

The square root of 1131217 is about 1063.5868558797. The cubic root of 1131217 is about 104.1954227454.

Adding to 1131217 its reverse (7121311), we get a palindrome (8252528).

The spelling of 1131217 in words is "one million, one hundred thirty-one thousand, two hundred seventeen".