243102203 has 4 divisors (see below), whose sum is σ = 253671888. Its totient is φ = 232532520.

The previous prime is 243102199. The next prime is 243102241. The reversal of 243102203 is 302201342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243102203 - 2² = 243102199 is a prime.

It is a super-2 number, since 2×243102203² = 118197362206906418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243101203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5284808 + ... + 5284853.

It is an arithmetic number, because the mean of its divisors is an integer number (63417972).

Almost surely, 2^243102203 is an apocalyptic number.

243102203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243102203 is a deficient number, since it is larger than the sum of its proper divisors (10569685).

243102203 is a wasteful number, since it uses less digits than its factorization.

243102203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10569684.

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

The square root of 243102203 is about 15591.7350862564. The cubic root of 243102203 is about 624.1126205820.

Adding to 243102203 its reverse (302201342), we get a palindrome (545303545).

The spelling of 243102203 in words is "two hundred forty-three million, one hundred two thousand, two hundred three".