113213412 has 72 divisors (see below), whose sum is σ = 314810496. Its totient is φ = 34087104.

The previous prime is 113213407. The next prime is 113213413. The reversal of 113213412 is 214312311.

113213412 is a `hidden beast` number, since 1 + 1 + 321 + 341 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is not an unprimeable number, because it can be changed into a prime (113213413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19423 + ... + 24569.

It is an arithmetic number, because the mean of its divisors is an integer number (4372368).

Almost surely, 2^113213412 is an apocalyptic number.

113213412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113213412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157405248).

113213412 is an abundant number, since it is smaller than the sum of its proper divisors (201597084).

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

113213412 is a wasteful number, since it uses less digits than its factorization.

113213412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217 (or 5212 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 113213412 is about 10640.1791338304. The cubic root of 113213412 is about 483.7629750341.

Adding to 113213412 its reverse (214312311), we get a palindrome (327525723).

The spelling of 113213412 in words is "one hundred thirteen million, two hundred thirteen thousand, four hundred twelve".