111231564170213 has 8 divisors (see below), whose sum is σ = 111477242553432. Its totient is φ = 110986156509696.

The previous prime is 111231564170191. The next prime is 111231564170231. The reversal of 111231564170213 is 312071465132111.

It can be written as a sum of positive squares in 4 ways, for example, as 14678576175169 + 96552987995044 = 3831263^2 + 9826138^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111231564170213 - 2¹⁶ = 111231564104677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111231564178213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66858020 + ... + 68501517.

It is an arithmetic number, because the mean of its divisors is an integer number (13934655319179).

Almost surely, 2^{111231564170213} is an apocalyptic number.

It is an amenable number.

111231564170213 is a deficient number, since it is larger than the sum of its proper divisors (245678383219).

111231564170213 is an equidigital number, since it uses as much as digits as its factorization.

111231564170213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135361351.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 111231564170213 in words is "one hundred eleven trillion, two hundred thirty-one billion, five hundred sixty-four million, one hundred seventy thousand, two hundred thirteen".