1113231213 has 12 divisors (see below), whose sum is σ = 1702589148. Its totient is φ = 698497920.

The previous prime is 1113231209. The next prime is 1113231227. The reversal of 1113231213 is 3121323111.

It can be written as a sum of positive squares in 2 ways, for example, as 1023872004 + 89359209 = 31998^2 + 9453^2 .

It is not a de Polignac number, because 1113231213 - 2² = 1113231209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113231233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3637858 + ... + 3638163.

It is an arithmetic number, because the mean of its divisors is an integer number (141882429).

Almost surely, 2^1113231213 is an apocalyptic number.

It is an amenable number.

1113231213 is a deficient number, since it is larger than the sum of its proper divisors (589357935).

1113231213 is a wasteful number, since it uses less digits than its factorization.

1113231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276044 (or 7276041 counting only the distinct ones).

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

The square root of 1113231213 is about 33365.1197060643. The cubic root of 1113231213 is about 1036.4025150507.

Adding to 1113231213 its reverse (3121323111), we get a palindrome (4234554324).

The spelling of 1113231213 in words is "one billion, one hundred thirteen million, two hundred thirty-one thousand, two hundred thirteen".