111710361361 has 3 divisors (see below), whose sum is σ = 111710695593. Its totient is φ = 111710027130.

The previous prime is 111710361293. The next prime is 111710361407. The reversal of 111710361361 is 163163017111.

The square root of 111710361361 is 334231.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 163163017111 = 251 ⋅650051861.

It is not a de Polignac number, because 111710361361 - 2²¹ = 111708264209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111710341361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 167116 + ... + 501346.

It is an arithmetic number, because the mean of its divisors is an integer number (37236898531).

Almost surely, 2^111710361361 is an apocalyptic number.

111710361361 is the 334231-st square number.

111710361361 is the 167116-th centered octagonal number.

It is an amenable number.

111710361361 is a deficient number, since it is larger than the sum of its proper divisors (334232).

111710361361 is an frugal number, since it uses more digits than its factorization.

111710361361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668462 (or 334231 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

Adding to 111710361361 its reverse (163163017111), we get a palindrome (274873378472).

The spelling of 111710361361 in words is "one hundred eleven billion, seven hundred ten million, three hundred sixty-one thousand, three hundred sixty-one".