203404434124101 has 32 divisors (see below), whose sum is σ = 311221842935040. Its totient is φ = 115754352666624.

The previous prime is 203404434124039. The next prime is 203404434124121. The reversal of 203404434124101 is 101421434404302.

It is a happy number.

It is not a de Polignac number, because 203404434124101 - 2²⁶ = 203404367015237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203404434124121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7704711 + ... + 21591003.

It is an arithmetic number, because the mean of its divisors is an integer number (9725682591720).

Almost surely, 2^{203404434124101} is an apocalyptic number.

203404434124101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203404434124101 is a deficient number, since it is larger than the sum of its proper divisors (107817408810939).

203404434124101 is a wasteful number, since it uses less digits than its factorization.

203404434124101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889165.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 203404434124101 its reverse (101421434404302), we get a palindrome (304825868528403).

The spelling of 203404434124101 in words is "two hundred three trillion, four hundred four billion, four hundred thirty-four million, one hundred twenty-four thousand, one hundred one".