223131113 has 4 divisors (see below), whose sum is σ = 227341188. Its totient is φ = 218921040.

The previous prime is 223131109. The next prime is 223131157. The reversal of 223131113 is 311131322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311131322 = 2 ⋅155565661.

It can be written as a sum of positive squares in 2 ways, for example, as 122168809 + 100962304 = 11053^2 + 10048^2 .

It is a cyclic number.

It is not a de Polignac number, because 223131113 - 2² = 223131109 is a prime.

It is a super-3 number, since 3×223131113³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223131091 and 223131100.

It is not an unprimeable number, because it can be changed into a prime (223131173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2104958 + ... + 2105063.

It is an arithmetic number, because the mean of its divisors is an integer number (56835297).

Almost surely, 2^223131113 is an apocalyptic number.

It is an amenable number.

223131113 is a deficient number, since it is larger than the sum of its proper divisors (4210075).

223131113 is an equidigital number, since it uses as much as digits as its factorization.

223131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210074.

The product of its digits is 108, while the sum is 17.

The square root of 223131113 is about 14937.5738659262. The cubic root of 223131113 is about 606.5315230844.

Adding to 223131113 its reverse (311131322), we get a palindrome (534262435).

The spelling of 223131113 in words is "two hundred twenty-three million, one hundred thirty-one thousand, one hundred thirteen".