111317117837 has 4 divisors (see below), whose sum is σ = 112567872060. Its totient is φ = 110066363616.

The previous prime is 111317117803. The next prime is 111317117959. The reversal of 111317117837 is 738711713111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 738711713111 = 17 ⋅43453630183.

It can be written as a sum of positive squares in 2 ways, for example, as 50127179881 + 61189937956 = 223891^2 + 247366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111317117837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111317117794 and 111317117803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111317177837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625376978 + ... + 625377155.

It is an arithmetic number, because the mean of its divisors is an integer number (28141968015).

Almost surely, 2^111317117837 is an apocalyptic number.

It is an amenable number.

111317117837 is a deficient number, since it is larger than the sum of its proper divisors (1250754223).

111317117837 is an equidigital number, since it uses as much as digits as its factorization.

111317117837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250754222.

The product of its digits is 24696, while the sum is 41.

The spelling of 111317117837 in words is "one hundred eleven billion, three hundred seventeen million, one hundred seventeen thousand, eight hundred thirty-seven".