203240013444 has 72 divisors (see below), whose sum is σ = 553430935512. Its totient is φ = 62516574720.

The previous prime is 203240013443. The next prime is 203240013491. The reversal of 203240013444 is 444310042302.

It is a happy number.

203240013444 is a `hidden beast` number, since 203 + 2 + 4 + 0 + 0 + 13 + 444 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7593031044 + 195646982400 = 87138^2 + 442320^2 .

It is a super-2 number, since 2×203240013444² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203240013443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1533664 + ... + 1660904.

It is an arithmetic number, because the mean of its divisors is an integer number (7686540771).

Almost surely, 2^203240013444 is an apocalyptic number.

It is an amenable number.

203240013444 is an abundant number, since it is smaller than the sum of its proper divisors (350190922068).

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

203240013444 is a wasteful number, since it uses less digits than its factorization.

203240013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130677 (or 130672 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 203240013444 its reverse (444310042302), we get a palindrome (647550055746).

The spelling of 203240013444 in words is "two hundred three billion, two hundred forty million, thirteen thousand, four hundred forty-four".