203431400034 has 32 divisors (see below), whose sum is σ = 408914507520. Its totient is φ = 67469001600.

The previous prime is 203431400021. The next prime is 203431400057. The reversal of 203431400034 is 430004134302.

It is a junction number, because it is equal to n+sod(n) for n = 203431399977 and 203431400013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1633494 + ... + 1753614.

It is an arithmetic number, because the mean of its divisors is an integer number (12778578360).

Almost surely, 2^203431400034 is an apocalyptic number.

203431400034 is an abundant number, since it is smaller than the sum of its proper divisors (205483107486).

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

203431400034 is a wasteful number, since it uses less digits than its factorization.

203431400034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121546.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203431400034 its reverse (430004134302), we get a palindrome (633435534336).

The spelling of 203431400034 in words is "two hundred three billion, four hundred thirty-one million, four hundred thousand, thirty-four".