243043100 has 36 divisors (see below), whose sum is σ = 544423488. Its totient is φ = 94080000.

The previous prime is 243043091. The next prime is 243043109. The reversal of 243043100 is 1340342.

It is an interprime number because it is at equal distance from previous prime (243043091) and next prime (243043109).

It is a super-2 number, since 2×243043100² = 118139896915220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243043109) 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, 36101 + ... + 42300.

Almost surely, 2^243043100 is an apocalyptic number.

243043100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243043100 is an abundant number, since it is smaller than the sum of its proper divisors (301380388).

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

243043100 is a wasteful number, since it uses less digits than its factorization.

243043100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78446 (or 78439 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 243043100 is about 15589.8396399706. The cubic root of 243043100 is about 624.0620384024.

Adding to 243043100 its reverse (1340342), we get a palindrome (244383442).

It can be divided in two parts, 24304 and 3100, that multiplied together give a square (75342400 = 8680²).

The spelling of 243043100 in words is "two hundred forty-three million, forty-three thousand, one hundred".