113231113212 has 48 divisors (see below), whose sum is σ = 304153678080. Its totient is φ = 32115599232.

The previous prime is 113231113183. The next prime is 113231113213. The reversal of 113231113212 is 212311132311.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113231113213) 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, 4908162 + ... + 4931177.

It is an arithmetic number, because the mean of its divisors is an integer number (6336534960).

Almost surely, 2^113231113212 is an apocalyptic number.

113231113212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113231113212 is an abundant number, since it is smaller than the sum of its proper divisors (190922564868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113231113212 is a wasteful number, since it uses less digits than its factorization.

113231113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839490 (or 9839488 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 113231113212 its reverse (212311132311), we get a palindrome (325542245523).

The spelling of 113231113212 in words is "one hundred thirteen billion, two hundred thirty-one million, one hundred thirteen thousand, two hundred twelve".