243203240502 has 80 divisors (see below), whose sum is σ = 576857849040. Its totient is φ = 76451957568.

The previous prime is 243203240477. The next prime is 243203240587. The reversal of 243203240502 is 205042302342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 399933 + ... + 803960.

It is an arithmetic number, because the mean of its divisors is an integer number (7210723113).

Almost surely, 2^243203240502 is an apocalyptic number.

243203240502 is an abundant number, since it is smaller than the sum of its proper divisors (333654608538).

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

243203240502 is a wasteful number, since it uses less digits than its factorization.

243203240502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203979 (or 1203970 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 243203240502 its reverse (205042302342), we get a palindrome (448245542844).

The spelling of 243203240502 in words is "two hundred forty-three billion, two hundred three million, two hundred forty thousand, five hundred two".