243400323100 has 36 divisors (see below), whose sum is σ = 576194949288. Its totient is φ = 88509208000.

The previous prime is 243400323097. The next prime is 243400323119. The reversal of 243400323100 is 1323004342.

It is a happy number.

It is a super-2 number, since 2×243400323100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110635411 + ... + 110637610.

It is an arithmetic number, because the mean of its divisors is an integer number (16005415258).

Almost surely, 2^243400323100 is an apocalyptic number.

243400323100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243400323100 is an abundant number, since it is smaller than the sum of its proper divisors (332794626188).

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

243400323100 is a wasteful number, since it uses less digits than its factorization.

243400323100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221273046 (or 221273039 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 243400323100 its reverse (1323004342), we get a palindrome (244723327442).

The spelling of 243400323100 in words is "two hundred forty-three billion, four hundred million, three hundred twenty-three thousand, one hundred".