243203440102 has 64 divisors (see below), whose sum is σ = 455727283200. Its totient is φ = 95015877120.

The previous prime is 243203440093. The next prime is 243203440163. The reversal of 243203440102 is 201044302342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643399 + ... + 948877.

It is an arithmetic number, because the mean of its divisors is an integer number (7120738800).

Almost surely, 2^243203440102 is an apocalyptic number.

243203440102 is a deficient number, since it is larger than the sum of its proper divisors (212523843098).

243203440102 is a wasteful number, since it uses less digits than its factorization.

243203440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305621.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 243203440102 its reverse (201044302342), we get a palindrome (444247742444).

The spelling of 243203440102 in words is "two hundred forty-three billion, two hundred three million, four hundred forty thousand, one hundred two".