203313408240 has 80 divisors (see below), whose sum is σ = 650602930176. Its totient is φ = 52467974400.

The previous prime is 203313408239. The next prime is 203313408253. The reversal of 203313408240 is 42804313302.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 203313408198 and 203313408207.

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, 13656096 + ... + 13670975.

Almost surely, 2^203313408240 is an apocalyptic number.

203313408240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203313408240 is an abundant number, since it is smaller than the sum of its proper divisors (447289521936).

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

203313408240 is a wasteful number, since it uses less digits than its factorization.

203313408240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27327118 (or 27327112 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 203313408240 in words is "two hundred three billion, three hundred thirteen million, four hundred eight thousand, two hundred forty".