203412232240 has 160 divisors (see below), whose sum is σ = 573426155520. Its totient is φ = 65550062592.

The previous prime is 203412232217. The next prime is 203412232279. The reversal of 203412232240 is 42232214302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1276014 + ... + 1426546.

It is an arithmetic number, because the mean of its divisors is an integer number (3583913472).

Almost surely, 2^203412232240 is an apocalyptic number.

203412232240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203412232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286713077760).

203412232240 is an abundant number, since it is smaller than the sum of its proper divisors (370013923280).

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

203412232240 is a wasteful number, since it uses less digits than its factorization.

203412232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150699 (or 150693 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203412232240 its reverse (42232214302), we get a palindrome (245644446542).

The spelling of 203412232240 in words is "two hundred three billion, four hundred twelve million, two hundred thirty-two thousand, two hundred forty".