520342550731 has 16 divisors (see below), whose sum is σ = 530571617280. Its totient is φ = 510205815360.

The previous prime is 520342550699. The next prime is 520342550813. The reversal of 520342550731 is 137055243025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 520342550731 - 2⁵ = 520342550699 is a prime.

It is a super-2 number, since 2×520342550731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520342550531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8874810 + ... + 8933248.

It is an arithmetic number, because the mean of its divisors is an integer number (33160726080).

Almost surely, 2^520342550731 is an apocalyptic number.

520342550731 is a deficient number, since it is larger than the sum of its proper divisors (10229066549).

520342550731 is a wasteful number, since it uses less digits than its factorization.

520342550731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59226.

The product of its (nonzero) digits is 126000, while the sum is 37.

Adding to 520342550731 its reverse (137055243025), we get a palindrome (657397793756).

The spelling of 520342550731 in words is "five hundred twenty billion, three hundred forty-two million, five hundred fifty thousand, seven hundred thirty-one".