203202431321340 has 72 divisors (see below), whose sum is σ = 625393267989840. Its totient is φ = 49261195470080.

The previous prime is 203202431321327. The next prime is 203202431321359. The reversal of 203202431321340 is 43123134202302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 203202431321298 and 203202431321307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13994650545 + ... + 13994665064.

It is an arithmetic number, because the mean of its divisors is an integer number (8686017610970).

Almost surely, 2^{203202431321340} is an apocalyptic number.

203202431321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203202431321340 is an abundant number, since it is smaller than the sum of its proper divisors (422190836668500).

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

203202431321340 is a wasteful number, since it uses less digits than its factorization.

203202431321340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27989315643 (or 27989315630 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 203202431321340 its reverse (43123134202302), we get a palindrome (246325565523642).

The spelling of 203202431321340 in words is "two hundred three trillion, two hundred two billion, four hundred thirty-one million, three hundred twenty-one thousand, three hundred forty".