503430243541 has 4 divisors (see below), whose sum is σ = 506211626284. Its totient is φ = 500648860800.

The previous prime is 503430243527. The next prime is 503430243601. The reversal of 503430243541 is 145342034305.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2065702500 + 501364541041 = 45450^2 + 708071^2 .

It is a cyclic number.

It is not a de Polignac number, because 503430243541 - 2⁷ = 503430243413 is a prime.

It is a super-2 number, since 2×503430243541² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 503430243497 and 503430243506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503430243521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390691100 + ... + 1390691461.

It is an arithmetic number, because the mean of its divisors is an integer number (126552906571).

Almost surely, 2^503430243541 is an apocalyptic number.

It is an amenable number.

503430243541 is a deficient number, since it is larger than the sum of its proper divisors (2781382743).

503430243541 is a wasteful number, since it uses less digits than its factorization.

503430243541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781382742.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 503430243541 its reverse (145342034305), we get a palindrome (648772277846).

The spelling of 503430243541 in words is "five hundred three billion, four hundred thirty million, two hundred forty-three thousand, five hundred forty-one".