203031312102 has 32 divisors (see below), whose sum is σ = 462185105760. Its totient is φ = 66026442240.

The previous prime is 203031312047. The next prime is 203031312131. The reversal of 203031312102 is 201213130302.

203031312102 is a `hidden beast` number, since 20 + 303 + 131 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 45849483 + ... + 45853910.

It is an arithmetic number, because the mean of its divisors is an integer number (14443284555).

Almost surely, 2^203031312102 is an apocalyptic number.

203031312102 is an abundant number, since it is smaller than the sum of its proper divisors (259153793658).

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

203031312102 is a wasteful number, since it uses less digits than its factorization.

203031312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91703445 (or 91703439 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203031312102 its reverse (201213130302), we get a palindrome (404244442404).

The spelling of 203031312102 in words is "two hundred three billion, thirty-one million, three hundred twelve thousand, one hundred two".