520389763231 has 32 divisors (see below), whose sum is σ = 607405296960. Its totient is φ = 441429295104.

The previous prime is 520389763213. The next prime is 520389763277. The reversal of 520389763231 is 132367983025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 520389763231 - 2⁹ = 520389762719 is a prime.

It is a super-3 number, since 3×520389763231³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520389767231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31475175 + ... + 31491703.

It is an arithmetic number, because the mean of its divisors is an integer number (18981415530).

Almost surely, 2^520389763231 is an apocalyptic number.

520389763231 is a deficient number, since it is larger than the sum of its proper divisors (87015533729).

520389763231 is a wasteful number, since it uses less digits than its factorization.

520389763231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19915.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 520389763231 in words is "five hundred twenty billion, three hundred eighty-nine million, seven hundred sixty-three thousand, two hundred thirty-one".