203312232340 has 24 divisors (see below), whose sum is σ = 487949357952. Its totient is φ = 69707051040.

The previous prime is 203312232337. The next prime is 203312232349. The reversal of 203312232340 is 43232213302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203312232349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726114976 + ... + 726115255.

It is an arithmetic number, because the mean of its divisors is an integer number (20331223248).

Almost surely, 2^203312232340 is an apocalyptic number.

203312232340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203312232340 is an abundant number, since it is smaller than the sum of its proper divisors (284637125612).

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

203312232340 is a wasteful number, since it uses less digits than its factorization.

203312232340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452230247 (or 1452230245 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 203312232340 its reverse (43232213302), we get a palindrome (246544445642).

The spelling of 203312232340 in words is "two hundred three billion, three hundred twelve million, two hundred thirty-two thousand, three hundred forty".