243013122 has 96 divisors (see below), whose sum is σ = 601945344. Its totient is φ = 72867600.

The previous prime is 243013063. The next prime is 243013139. The reversal of 243013122 is 221310342.

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

It is a junction number, because it is equal to n+sod(n) for n = 243013095 and 243013104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 700153 + ... + 700499.

It is an arithmetic number, because the mean of its divisors is an integer number (6270264).

Almost surely, 2^243013122 is an apocalyptic number.

243013122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 243013122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300972672).

243013122 is an abundant number, since it is smaller than the sum of its proper divisors (358932222).

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

243013122 is a wasteful number, since it uses less digits than its factorization.

243013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 243013122 is about 15588.8781507843. The cubic root of 243013122 is about 624.0363791660.

Adding to 243013122 its reverse (221310342), we get a palindrome (464323464).

The spelling of 243013122 in words is "two hundred forty-three million, thirteen thousand, one hundred twenty-two".