113421312 has 132 divisors (see below), whose sum is σ = 338917696. Its totient is φ = 36495360.

The previous prime is 113421311. The next prime is 113421313. The reversal of 113421312 is 213124311.

113421312 is a `hidden beast` number, since 11 + 342 + 1 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (113421311) and next prime (113421313).

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 and also a Zuckerman number because it is divisible by the product of its digits.

It is not an unprimeable number, because it can be changed into a prime (113421311) 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, 285498 + ... + 285894.

Almost surely, 2^113421312 is an apocalyptic number.

113421312 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 113421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169458848).

113421312 is an abundant number, since it is smaller than the sum of its proper divisors (225496384).

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

113421312 is a wasteful number, since it uses less digits than its factorization.

113421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 433 counting only the distinct ones).

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

The square root of 113421312 is about 10649.9442252061. The cubic root of 113421312 is about 484.0589141226.

Adding to 113421312 its reverse (213124311), we get a palindrome (326545623).

It can be divided in two parts, 1134213 and 12, that added together give a square (1134225 = 1065²).

The spelling of 113421312 in words is "one hundred thirteen million, four hundred twenty-one thousand, three hundred twelve".