1317112345 has 16 divisors (see below), whose sum is σ = 1639756800. Its totient is φ = 1014552000.

The previous prime is 1317112271. The next prime is 1317112351. The reversal of 1317112345 is 5432117131.

It is not a de Polignac number, because 1317112345 - 2¹¹ = 1317110297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9495 + ... + 52195.

It is an arithmetic number, because the mean of its divisors is an integer number (102484800).

Almost surely, 2^1317112345 is an apocalyptic number.

It is an amenable number.

1317112345 is a deficient number, since it is larger than the sum of its proper divisors (322644455).

1317112345 is a wasteful number, since it uses less digits than its factorization.

1317112345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42936.

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

The square root of 1317112345 is about 36292.0424473465. The cubic root of 1317112345 is about 1096.1608159183.

Adding to 1317112345 its reverse (5432117131), we get a palindrome (6749229476).

The spelling of 1317112345 in words is "one billion, three hundred seventeen million, one hundred twelve thousand, three hundred forty-five".