506718431 has 4 divisors (see below), whose sum is σ = 506853864. Its totient is φ = 506583000.

The previous prime is 506718413. The next prime is 506718461. The reversal of 506718431 is 134817605.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506718431 is a prime.

It is a super-2 number, since 2×506718431² = 513527136630203522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 506718391 and 506718400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506718461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61940 + ... + 69641.

It is an arithmetic number, because the mean of its divisors is an integer number (126713466).

Almost surely, 2^506718431 is an apocalyptic number.

506718431 is a deficient number, since it is larger than the sum of its proper divisors (135433).

506718431 is a wasteful number, since it uses less digits than its factorization.

506718431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135432.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 506718431 is about 22510.4071709065. The cubic root of 506718431 is about 797.2396694861.

The spelling of 506718431 in words is "five hundred six million, seven hundred eighteen thousand, four hundred thirty-one".