1117431385 has 16 divisors (see below), whose sum is σ = 1558454400. Its totient is φ = 753250176.

The previous prime is 1117431361. The next prime is 1117431391. The reversal of 1117431385 is 5831347111.

It is a happy number.

It is not a de Polignac number, because 1117431385 - 2¹⁵ = 1117398617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1117431385.

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, 268500 + ... + 272629.

It is an arithmetic number, because the mean of its divisors is an integer number (97403400).

Almost surely, 2^1117431385 is an apocalyptic number.

It is an amenable number.

1117431385 is a deficient number, since it is larger than the sum of its proper divisors (441023015).

1117431385 is an equidigital number, since it uses as much as digits as its factorization.

1117431385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541200.

The product of its digits is 10080, while the sum is 34.

The square root of 1117431385 is about 33428.0030064615. The cubic root of 1117431385 is about 1037.7043127890.

Adding to 1117431385 its reverse (5831347111), we get a palindrome (6948778496).

The spelling of 1117431385 in words is "one billion, one hundred seventeen million, four hundred thirty-one thousand, three hundred eighty-five".