243203232402 has 80 divisors (see below), whose sum is σ = 597948424920. Its totient is φ = 73419810048.

The previous prime is 243203232367. The next prime is 243203232463. The reversal of 243203232402 is 204232302342.

It is a happy number.

243203232402 is a `hidden beast` number, since 2 + 4 + 3 + 20 + 3 + 232 + 402 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 107433828441 + 135769403961 = 327771^2 + 368469^2 .

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

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, 977827 + ... + 1201062.

Almost surely, 2^243203232402 is an apocalyptic number.

243203232402 is an abundant number, since it is smaller than the sum of its proper divisors (354745192518).

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

243203232402 is a wasteful number, since it uses less digits than its factorization.

243203232402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178969 (or 2178960 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 243203232402 its reverse (204232302342), we get a palindrome (447435534744).

The spelling of 243203232402 in words is "two hundred forty-three billion, two hundred three million, two hundred thirty-two thousand, four hundred two".