503140431 has 8 divisors (see below), whose sum is σ = 672755760. Its totient is φ = 334476032.

The previous prime is 503140423. The next prime is 503140441. The reversal of 503140431 is 134041305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503140431 - 2³ = 503140423 is a prime.

It is a super-2 number, since 2×503140431² = 506300586613731522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 503140398 and 503140407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503140411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236496 + ... + 238613.

It is an arithmetic number, because the mean of its divisors is an integer number (84094470).

Almost surely, 2^503140431 is an apocalyptic number.

503140431 is a deficient number, since it is larger than the sum of its proper divisors (169615329).

503140431 is a wasteful number, since it uses less digits than its factorization.

503140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475465.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 503140431 is about 22430.7920279245. The cubic root of 503140431 is about 795.3587669115.

Adding to 503140431 its reverse (134041305), we get a palindrome (637181736).

The spelling of 503140431 in words is "five hundred three million, one hundred forty thousand, four hundred thirty-one".