204311515432 has 8 divisors (see below), whose sum is σ = 383084091450. Its totient is φ = 102155757712.

The previous prime is 204311515427. The next prime is 204311515433. The reversal of 204311515432 is 234515113402.

It can be written as a sum of positive squares in only one way, i.e., 116762990436 + 87548524996 = 341706^2 + 295886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 204311515394 and 204311515403.

It is not an unprimeable number, because it can be changed into a prime (204311515433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12769469707 + ... + 12769469722.

Almost surely, 2^204311515432 is an apocalyptic number.

It is an amenable number.

204311515432 is a deficient number, since it is larger than the sum of its proper divisors (178772576018).

204311515432 is a wasteful number, since it uses less digits than its factorization.

204311515432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25538939435 (or 25538939431 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 204311515432 its reverse (234515113402), we get a palindrome (438826628834).

The spelling of 204311515432 in words is "two hundred four billion, three hundred eleven million, five hundred fifteen thousand, four hundred thirty-two".