1131224317 has 8 divisors (see below), whose sum is σ = 1196197632. Its totient is φ = 1068031200.

The previous prime is 1131224239. The next prime is 1131224333. The reversal of 1131224317 is 7134221311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131224317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131224291 and 1131224300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131224417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443743 + ... + 446284.

It is an arithmetic number, because the mean of its divisors is an integer number (149524704).

Almost surely, 2^1131224317 is an apocalyptic number.

It is an amenable number.

1131224317 is a deficient number, since it is larger than the sum of its proper divisors (64973315).

1131224317 is an equidigital number, since it uses as much as digits as its factorization.

1131224317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890099.

The product of its digits is 1008, while the sum is 25.

The square root of 1131224317 is about 33633.6783150461. The cubic root of 1131224317 is about 1041.9564739906.

Adding to 1131224317 its reverse (7134221311), we get a palindrome (8265445628).

The spelling of 1131224317 in words is "one billion, one hundred thirty-one million, two hundred twenty-four thousand, three hundred seventeen".