5209831 has 8 divisors (see below), whose sum is σ = 5702544. Its totient is φ = 4720320.

The previous prime is 5209823. The next prime is 5209849. The reversal of 5209831 is 1389025.

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

It is not a de Polignac number, because 5209831 - 2³ = 5209823 is a prime.

It is a super-2 number, since 2×5209831² = 54284678097122, which contains 22 as substring.

It is a Duffinian number.

5209831 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5209831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209861) 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 7 ways as a sum of consecutive naturals, for example, 3771 + ... + 4963.

It is an arithmetic number, because the mean of its divisors is an integer number (712818).

Almost surely, 2^5209831 is an apocalyptic number.

5209831 is a deficient number, since it is larger than the sum of its proper divisors (492713).

5209831 is a wasteful number, since it uses less digits than its factorization.

5209831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 5209831 is about 2282.5054216803. The cubic root of 5209831 is about 173.3569317805.

The spelling of 5209831 in words is "five million, two hundred nine thousand, eight hundred thirty-one".