111312361 has 2 divisors, whose sum is σ = 111312362. Its totient is φ = 111312360.

The previous prime is 111312307. The next prime is 111312427. The reversal of 111312361 is 163213111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96412761 + 14899600 = 9819^2 + 3860^2 .

It is a cyclic number.

It is not a de Polignac number, because 111312361 - 2⁷ = 111312233 is a prime.

It is a super-2 number, since 2×111312361² = 24780883422788642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111312301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656180 + 55656181.

It is an arithmetic number, because the mean of its divisors is an integer number (55656181).

Almost surely, 2^111312361 is an apocalyptic number.

It is an amenable number.

111312361 is a deficient number, since it is larger than the sum of its proper divisors (1).

111312361 is an equidigital number, since it uses as much as digits as its factorization.

111312361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 19.

The square root of 111312361 is about 10550.4673356207. The cubic root of 111312361 is about 481.0399342711.

Adding to 111312361 its reverse (163213111), we get a palindrome (274525472).

The spelling of 111312361 in words is "one hundred eleven million, three hundred twelve thousand, three hundred sixty-one".