520104431 has 8 divisors (see below), whose sum is σ = 648441984. Its totient is φ = 405276120.

The previous prime is 520104407. The next prime is 520104433. The reversal of 520104431 is 134401025.

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 520104431 - 2¹⁰ = 520103407 is a prime.

It is a super-2 number, since 2×520104431² = 541017238291667522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520104433) 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, 3377225 + ... + 3377378.

It is an arithmetic number, because the mean of its divisors is an integer number (81055248).

Almost surely, 2^520104431 is an apocalyptic number.

520104431 is a deficient number, since it is larger than the sum of its proper divisors (128337553).

520104431 is a wasteful number, since it uses less digits than its factorization.

520104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6754621.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 520104431 is about 22805.7981881801. The cubic root of 520104431 is about 804.1989799622.

Adding to 520104431 its reverse (134401025), we get a palindrome (654505456).

The spelling of 520104431 in words is "five hundred twenty million, one hundred four thousand, four hundred thirty-one".