204312111406 has 16 divisors (see below), whose sum is σ = 330084176688. Its totient is φ = 94286030400.

The previous prime is 204312111379. The next prime is 204312111413. The reversal of 204312111406 is 604111213402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282175 + ... + 698746.

It is an arithmetic number, because the mean of its divisors is an integer number (20630261043).

Almost surely, 2^204312111406 is an apocalyptic number.

204312111406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204312111406 is a deficient number, since it is larger than the sum of its proper divisors (125772065282).

204312111406 is a wasteful number, since it uses less digits than its factorization.

204312111406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988947.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 204312111406 its reverse (604111213402), we get a palindrome (808423324808).

The spelling of 204312111406 in words is "two hundred four billion, three hundred twelve million, one hundred eleven thousand, four hundred six".