243155300 has 36 divisors (see below), whose sum is σ = 531174336. Its totient is φ = 96612000.

The previous prime is 243155279. The next prime is 243155317. The reversal of 243155300 is 3551342.

243155300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7049 + ... + 23151.

Almost surely, 2^243155300 is an apocalyptic number.

243155300 is a gapful number since it is divisible by the number (20) 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 243155300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265587168).

243155300 is an abundant number, since it is smaller than the sum of its proper divisors (288019036).

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

243155300 is a wasteful number, since it uses less digits than its factorization.

243155300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16268 (or 16261 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 243155300 is about 15593.4377223241. The cubic root of 243155300 is about 624.1580556502.

The spelling of 243155300 in words is "two hundred forty-three million, one hundred fifty-five thousand, three hundred".