203131110404420 has 96 divisors (see below), whose sum is σ = 466082196926976. Its totient is φ = 73750461120000.

The previous prime is 203131110404419. The next prime is 203131110404489. The reversal of 203131110404420 is 24404011131302.

It is a self number, because there is not a number n which added to its sum of digits gives 203131110404420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726332534 + ... + 726612146.

It is an arithmetic number, because the mean of its divisors is an integer number (4855022884656).

Almost surely, 2^{203131110404420} is an apocalyptic number.

203131110404420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203131110404420 is an abundant number, since it is smaller than the sum of its proper divisors (262951086522556).

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

203131110404420 is a wasteful number, since it uses less digits than its factorization.

203131110404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284781 (or 284779 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 203131110404420 its reverse (24404011131302), we get a palindrome (227535121535722).

The spelling of 203131110404420 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred ten million, four hundred four thousand, four hundred twenty".