520828131 has 4 divisors (see below), whose sum is σ = 694437512. Its totient is φ = 347218752.

The previous prime is 520828127. The next prime is 520828141. The reversal of 520828131 is 131828025.

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

It is not a de Polignac number, because 520828131 - 2² = 520828127 is a prime.

It is a super-2 number, since 2×520828131² = 542523884081906322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520828111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86804686 + ... + 86804691.

It is an arithmetic number, because the mean of its divisors is an integer number (173609378).

Almost surely, 2^520828131 is an apocalyptic number.

520828131 is a deficient number, since it is larger than the sum of its proper divisors (173609381).

520828131 is a wasteful number, since it uses less digits than its factorization.

520828131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173609380.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 520828131 is about 22821.6592516846. The cubic root of 520828131 is about 804.5718083370.

The spelling of 520828131 in words is "five hundred twenty million, eight hundred twenty-eight thousand, one hundred thirty-one".