204311023404402 has 16 divisors (see below), whose sum is σ = 410016661306560. Its totient is φ = 67871238718512.

The previous prime is 204311023404401. The next prime is 204311023404457. The reversal of 204311023404402 is 204404320113402.

It is a self number, because there is not a number n which added to its sum of digits gives 204311023404402.

It is not an unprimeable number, because it can be changed into a prime (204311023404401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58108935502 + ... + 58108939017.

It is an arithmetic number, because the mean of its divisors is an integer number (25626041331660).

Almost surely, 2^{204311023404402} is an apocalyptic number.

204311023404402 is an abundant number, since it is smaller than the sum of its proper divisors (205705637902158).

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

204311023404402 is a wasteful number, since it uses less digits than its factorization.

204311023404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116217874817.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 204311023404402 its reverse (204404320113402), we get a palindrome (408715343517804).

The spelling of 204311023404402 in words is "two hundred four trillion, three hundred eleven billion, twenty-three million, four hundred four thousand, four hundred two".