523113531013 has 4 divisors (see below), whose sum is σ = 530279469868. Its totient is φ = 515947592160.

The previous prime is 523113530971. The next prime is 523113531037. The reversal of 523113531013 is 310135311325.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 442248940324 + 80864590689 = 665018^2 + 284367^2 .

It is a cyclic number.

It is not a de Polignac number, because 523113531013 - 2²⁵ = 523079976581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523113531053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582969318 + ... + 3582969463.

It is an arithmetic number, because the mean of its divisors is an integer number (132569867467).

Almost surely, 2^523113531013 is an apocalyptic number.

It is an amenable number.

523113531013 is a deficient number, since it is larger than the sum of its proper divisors (7165938855).

523113531013 is an equidigital number, since it uses as much as digits as its factorization.

523113531013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165938854.

The product of its (nonzero) digits is 4050, while the sum is 28.

Adding to 523113531013 its reverse (310135311325), we get a palindrome (833248842338).

The spelling of 523113531013 in words is "five hundred twenty-three billion, one hundred thirteen million, five hundred thirty-one thousand, thirteen".