203130431300 has 36 divisors (see below), whose sum is σ = 466722041940. Its totient is φ = 76472632320.

The previous prime is 203130431281. The next prime is 203130431321. The reversal of 203130431300 is 3134031302.

It can be written as a sum of positive squares in 6 ways, for example, as 9306846784 + 193823584516 = 96472^2 + 440254^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59742545 + ... + 59745944.

It is an arithmetic number, because the mean of its divisors is an integer number (12964501165).

Almost surely, 2^203130431300 is an apocalyptic number.

203130431300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203130431300 is an abundant number, since it is smaller than the sum of its proper divisors (263591610640).

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

203130431300 is a wasteful number, since it uses less digits than its factorization.

203130431300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119488520 (or 119488513 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203130431300 its reverse (3134031302), we get a palindrome (206264462602).

The spelling of 203130431300 in words is "two hundred three billion, one hundred thirty million, four hundred thirty-one thousand, three hundred".