113231213213 has 8 divisors (see below), whose sum is σ = 113669904600. Its totient is φ = 112793175360.

The previous prime is 113231213167. The next prime is 113231213237. The reversal of 113231213213 is 312312132311.

It can be written as a sum of positive squares in 4 ways, for example, as 50331576409 + 62899636804 = 224347^2 + 250798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113231213213 - 2²⁰ = 113230164637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113231213113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185243 + ... + 510663.

It is an arithmetic number, because the mean of its divisors is an integer number (14208738075).

Almost surely, 2^113231213213 is an apocalyptic number.

It is an amenable number.

113231213213 is a deficient number, since it is larger than the sum of its proper divisors (438691387).

113231213213 is an equidigital number, since it uses as much as digits as its factorization.

113231213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326767.

The product of its digits is 648, while the sum is 23.

Adding to 113231213213 its reverse (312312132311), we get a palindrome (425543345524).

The spelling of 113231213213 in words is "one hundred thirteen billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred thirteen".