203212123134 has 32 divisors (see below), whose sum is σ = 430351276320. Its totient is φ = 63749901312.

The previous prime is 203212123129. The next prime is 203212123189. The reversal of 203212123134 is 431321212302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3651832 + ... + 3707060.

It is an arithmetic number, because the mean of its divisors is an integer number (13448477385).

Almost surely, 2^203212123134 is an apocalyptic number.

203212123134 is an abundant number, since it is smaller than the sum of its proper divisors (227139153186).

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

203212123134 is a wasteful number, since it uses less digits than its factorization.

203212123134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91324.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 203212123134 its reverse (431321212302), we get a palindrome (634533335436).

The spelling of 203212123134 in words is "two hundred three billion, two hundred twelve million, one hundred twenty-three thousand, one hundred thirty-four".