1113113213 has 4 divisors (see below), whose sum is σ = 1114014300. Its totient is φ = 1112212128.

The previous prime is 1113113191. The next prime is 1113113219. The reversal of 1113113213 is 3123113111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123113111 = 107 ⋅29187973.

It can be written as a sum of positive squares in 2 ways, for example, as 755260324 + 357852889 = 27482^2 + 18917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113113213 - 2⁶ = 1113113149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113113191 and 1113113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113113219) 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, 448688 + ... + 451161.

It is an arithmetic number, because the mean of its divisors is an integer number (278503575).

Almost surely, 2^1113113213 is an apocalyptic number.

It is an amenable number.

1113113213 is a deficient number, since it is larger than the sum of its proper divisors (901087).

1113113213 is an equidigital number, since it uses as much as digits as its factorization.

1113113213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901086.

The product of its digits is 54, while the sum is 17.

The square root of 1113113213 is about 33363.3513454509. The cubic root of 1113113213 is about 1036.3658949798.

Adding to 1113113213 its reverse (3123113111), we get a palindrome (4236226324).

The spelling of 1113113213 in words is "one billion, one hundred thirteen million, one hundred thirteen thousand, two hundred thirteen".