506431723 has 16 divisors (see below), whose sum is σ = 583955136. Its totient is φ = 430220160.

The previous prime is 506431703. The next prime is 506431729. The reversal of 506431723 is 327134605.

It is a cyclic number.

It is not a de Polignac number, because 506431723 - 2¹³ = 506423531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506431729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654765 + ... + 655537.

It is an arithmetic number, because the mean of its divisors is an integer number (36497196).

Almost surely, 2^506431723 is an apocalyptic number.

506431723 is a deficient number, since it is larger than the sum of its proper divisors (77523413).

506431723 is a wasteful number, since it uses less digits than its factorization.

506431723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 506431723 is about 22504.0379265589. The cubic root of 506431723 is about 797.0892781964.

The spelling of 506431723 in words is "five hundred six million, four hundred thirty-one thousand, seven hundred twenty-three".