203230011440 has 20 divisors (see below), whose sum is σ = 472509776784. Its totient is φ = 81292004544.

The previous prime is 203230011437. The next prime is 203230011443. The reversal of 203230011440 is 44110032302.

It is an interprime number because it is at equal distance from previous prime (203230011437) and next prime (203230011443).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (203230011443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270187492 + ... + 1270187651.

Almost surely, 2^203230011440 is an apocalyptic number.

203230011440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203230011440 is an abundant number, since it is smaller than the sum of its proper divisors (269279765344).

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

203230011440 is a wasteful number, since it uses less digits than its factorization.

203230011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540375156 (or 2540375150 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203230011440 its reverse (44110032302), we get a palindrome (247340043742).

The spelling of 203230011440 in words is "two hundred three billion, two hundred thirty million, eleven thousand, four hundred forty".