111394230605 has 18 divisors (see below), whose sum is σ = 155504545326. Its totient is φ = 76381033008.

The previous prime is 111394230599. The next prime is 111394230659. The reversal of 111394230605 is 506032493111.

It can be written as a sum of positive squares in only one way, i.e., 89115384484 + 22278846121 = 298522^2 + 149261^2 .

It is not a de Polignac number, because 111394230605 - 2⁴ = 111394230589 is a prime.

It is a super-2 number, since 2×111394230605² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5213474 + ... + 5234796.

It is an arithmetic number, because the mean of its divisors is an integer number (8639141407).

Almost surely, 2^111394230605 is an apocalyptic number.

It is an amenable number.

111394230605 is a deficient number, since it is larger than the sum of its proper divisors (44110314721).

111394230605 is an frugal number, since it uses more digits than its factorization.

111394230605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42665 (or 21335 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 111394230605 in words is "one hundred eleven billion, three hundred ninety-four million, two hundred thirty thousand, six hundred five".