113231213 has 4 divisors (see below), whose sum is σ = 113281728. Its totient is φ = 113180700.

The previous prime is 113231197. The next prime is 113231219. The reversal of 113231213 is 312132311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113231213 - 2⁴ = 113231197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113231191 and 113231200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113231219) 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, 21731 + ... + 26432.

It is an arithmetic number, because the mean of its divisors is an integer number (28320432).

Almost surely, 2^113231213 is an apocalyptic number.

It is an amenable number.

113231213 is a deficient number, since it is larger than the sum of its proper divisors (50515).

113231213 is an equidigital number, since it uses as much as digits as its factorization.

113231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50514.

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

The square root of 113231213 is about 10641.0156000262. The cubic root of 113231213 is about 483.7883283712.

Adding to 113231213 its reverse (312132311), we get a palindrome (425363524).

The spelling of 113231213 in words is "one hundred thirteen million, two hundred thirty-one thousand, two hundred thirteen".