1113321213 has 16 divisors (see below), whose sum is σ = 1687723840. Its totient is φ = 724952592.

The previous prime is 1113321199. The next prime is 1113321227. The reversal of 1113321213 is 3121233111.

It is an interprime number because it is at equal distance from previous prime (1113321199) and next prime (1113321227).

It is not a de Polignac number, because 1113321213 - 2⁶ = 1113321149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113321263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478306 + ... + 480627.

It is an arithmetic number, because the mean of its divisors is an integer number (105482740).

Almost surely, 2^1113321213 is an apocalyptic number.

It is an amenable number.

1113321213 is a deficient number, since it is larger than the sum of its proper divisors (574402627).

1113321213 is an equidigital number, since it uses as much as digits as its factorization.

1113321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958985 (or 958979 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1113321213 is about 33366.4683926843. The cubic root of 1113321213 is about 1036.4304438738.

Adding to 1113321213 its reverse (3121233111), we get a palindrome (4234554324).

The spelling of 1113321213 in words is "one billion, one hundred thirteen million, three hundred twenty-one thousand, two hundred thirteen".