203121313202032 has 80 divisors (see below), whose sum is σ = 430159810367232. Its totient is φ = 92498643578880.

The previous prime is 203121313201997. The next prime is 203121313202033. The reversal of 203121313202032 is 230202313121302.

It is a junction number, because it is equal to n+sod(n) for n = 203121313201988 and 203121313202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203121313202033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179179918 + ... + 180309970.

Almost surely, 2^{203121313202032} is an apocalyptic number.

It is an amenable number.

203121313202032 is an abundant number, since it is smaller than the sum of its proper divisors (227038497165200).

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

203121313202032 is a wasteful number, since it uses less digits than its factorization.

203121313202032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151426 (or 1151420 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 203121313202032 its reverse (230202313121302), we get a palindrome (433323626323334).

The spelling of 203121313202032 in words is "two hundred three trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred two thousand, thirty-two".