503431545240 has 192 divisors, whose sum is σ = 1770868008000. Its totient is φ = 123298661376.

The previous prime is 503431545209. The next prime is 503431545251. The reversal of 503431545240 is 42545134305.

503431545240 is a `hidden beast` number, since 50 + 3 + 4 + 31 + 54 + 524 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 503431545195 and 503431545204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 661042 + ... + 1201598.

It is an arithmetic number, because the mean of its divisors is an integer number (9223270875).

Almost surely, 2^503431545240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503431545240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885434004000).

503431545240 is an abundant number, since it is smaller than the sum of its proper divisors (1267436462760).

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

503431545240 is a wasteful number, since it uses less digits than its factorization.

503431545240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540786 (or 540779 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 503431545240 its reverse (42545134305), we get a palindrome (545976679545).

The spelling of 503431545240 in words is "five hundred three billion, four hundred thirty-one million, five hundred forty-five thousand, two hundred forty".