203231230440 has 128 divisors (see below), whose sum is σ = 696970172160. Its totient is φ = 46441027584.

The previous prime is 203231230421. The next prime is 203231230441. The reversal of 203231230440 is 44032132302.

203231230440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 203231230440.

It is not an unprimeable number, because it can be changed into a prime (203231230441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3513594 + ... + 3570966.

It is an arithmetic number, because the mean of its divisors is an integer number (5445079470).

Almost surely, 2^203231230440 is an apocalyptic number.

203231230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203231230440 is an abundant number, since it is smaller than the sum of its proper divisors (493738941720).

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

203231230440 is a wasteful number, since it uses less digits than its factorization.

203231230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61611 (or 61607 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203231230440 its reverse (44032132302), we get a palindrome (247263362742).

The spelling of 203231230440 in words is "two hundred three billion, two hundred thirty-one million, two hundred thirty thousand, four hundred forty".