520351032424431 has 32 divisors (see below), whose sum is σ = 780350660070912. Its totient is φ = 306020837865600.

The previous prime is 520351032424313. The next prime is 520351032424519. The reversal of 520351032424431 is 134424230153025.

It is a happy number.

It is not a de Polignac number, because 520351032424431 - 2¹¹ = 520351032422383 is a prime.

It is a super-2 number, since 2×520351032424431² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 520351032424431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520351032424831) 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, 257274720 + ... + 259289381.

It is an arithmetic number, because the mean of its divisors is an integer number (24385958127216).

Almost surely, 2^{520351032424431} is an apocalyptic number.

520351032424431 is a deficient number, since it is larger than the sum of its proper divisors (259999627646481).

520351032424431 is a wasteful number, since it uses less digits than its factorization.

520351032424431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516565263.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 520351032424431 its reverse (134424230153025), we get a palindrome (654775262577456).

The spelling of 520351032424431 in words is "five hundred twenty trillion, three hundred fifty-one billion, thirty-two million, four hundred twenty-four thousand, four hundred thirty-one".