111421313 has 4 divisors (see below), whose sum is σ = 114138948. Its totient is φ = 108703680.

The previous prime is 111421267. The next prime is 111421351. The reversal of 111421313 is 313124111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313124111 = 5119 ⋅61169.

It can be written as a sum of positive squares in 2 ways, for example, as 18722929 + 92698384 = 4327^2 + 9628^2 .

It is a cyclic number.

It is not a de Polignac number, because 111421313 - 2¹⁴ = 111404929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111421291 and 111421300.

It is not an unprimeable number, because it can be changed into a prime (111429313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358756 + ... + 1358837.

It is an arithmetic number, because the mean of its divisors is an integer number (28534737).

Almost surely, 2^111421313 is an apocalyptic number.

It is an amenable number.

111421313 is a deficient number, since it is larger than the sum of its proper divisors (2717635).

111421313 is an equidigital number, since it uses as much as digits as its factorization.

111421313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717634.

The product of its digits is 72, while the sum is 17.

The square root of 111421313 is about 10555.6294459402. The cubic root of 111421313 is about 481.1968296123.

Adding to 111421313 its reverse (313124111), we get a palindrome (424545424).

The spelling of 111421313 in words is "one hundred eleven million, four hundred twenty-one thousand, three hundred thirteen".