518134731 has 32 divisors (see below), whose sum is σ = 773245440. Its totient is φ = 307067904.

The previous prime is 518134723. The next prime is 518134733. The reversal of 518134731 is 137431815.

It is not a de Polignac number, because 518134731 - 2³ = 518134723 is a prime.

It is a super-2 number, since 2×518134731² = 536927198936884722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518134692 and 518134701.

It is not an unprimeable number, because it can be changed into a prime (518134733) 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 31 ways as a sum of consecutive naturals, for example, 65755 + ... + 73211.

It is an arithmetic number, because the mean of its divisors is an integer number (24163920).

Almost surely, 2^518134731 is an apocalyptic number.

518134731 is a deficient number, since it is larger than the sum of its proper divisors (255110709).

518134731 is a wasteful number, since it uses less digits than its factorization.

518134731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555.

The product of its digits is 10080, while the sum is 33.

The square root of 518134731 is about 22762.5730311843. The cubic root of 518134731 is about 803.1824952626.

The spelling of 518134731 in words is "five hundred eighteen million, one hundred thirty-four thousand, seven hundred thirty-one".