1117312345 has 16 divisors (see below), whose sum is σ = 1376870400. Its totient is φ = 870053184.

The previous prime is 1117312321. The next prime is 1117312349. The reversal of 1117312345 is 5432137111.

It is a cyclic number.

It is not a de Polignac number, because 1117312345 - 2¹¹ = 1117310297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1117312349) 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, 17056 + ... + 50254.

It is an arithmetic number, because the mean of its divisors is an integer number (86054400).

Almost surely, 2^1117312345 is an apocalyptic number.

It is an amenable number.

1117312345 is a deficient number, since it is larger than the sum of its proper divisors (259558055).

1117312345 is a wasteful number, since it uses less digits than its factorization.

1117312345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33384.

The product of its digits is 2520, while the sum is 28.

The square root of 1117312345 is about 33426.2224159416. Note that the first 3 decimals coincide. The cubic root of 1117312345 is about 1037.6674625896.

Adding to 1117312345 its reverse (5432137111), we get a palindrome (6549449456).

The spelling of 1117312345 in words is "one billion, one hundred seventeen million, three hundred twelve thousand, three hundred forty-five".