243401112 has 80 divisors (see below), whose sum is σ = 688683600. Its totient is φ = 80308800.

The previous prime is 243401107. The next prime is 243401117. The reversal of 243401112 is 211104342.

It is an interprime number because it is at equal distance from previous prime (243401107) and next prime (243401117).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243401117) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63589 + ... + 67307.

It is an arithmetic number, because the mean of its divisors is an integer number (8608545).

Almost surely, 2^243401112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243401112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344341800).

243401112 is an abundant number, since it is smaller than the sum of its proper divisors (445282488).

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

243401112 is a wasteful number, since it uses less digits than its factorization.

243401112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838 (or 3825 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 243401112 is about 15601.3176366613. The cubic root of 243401112 is about 624.3683106715.

Adding to 243401112 its reverse (211104342), we get a palindrome (454505454).

It can be divided in two parts, 24340 and 1112, that added together give a palindrome (25452).

The spelling of 243401112 in words is "two hundred forty-three million, four hundred one thousand, one hundred twelve".