1131113217 has 16 divisors (see below), whose sum is σ = 1640912000. Its totient is φ = 688891392.

The previous prime is 1131113201. The next prime is 1131113239. The reversal of 1131113217 is 7123111311.

It is not a de Polignac number, because 1131113217 - 2⁴ = 1131113201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131113193 and 1131113202.

It is not an unprimeable number, because it can be changed into a prime (1131113267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145717 + ... + 153282.

It is an arithmetic number, because the mean of its divisors is an integer number (102557000).

Almost surely, 2^1131113217 is an apocalyptic number.

It is an amenable number.

1131113217 is a deficient number, since it is larger than the sum of its proper divisors (509798783).

1131113217 is a wasteful number, since it uses less digits than its factorization.

1131113217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299112.

The product of its digits is 126, while the sum is 21.

The square root of 1131113217 is about 33632.0266561502. The cubic root of 1131113217 is about 1041.9223619368.

Adding to 1131113217 its reverse (7123111311), we get a palindrome (8254224528).

The spelling of 1131113217 in words is "one billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred seventeen".