513252012531 has 16 divisors (see below), whose sum is σ = 685253520000. Its totient is φ = 341709513408.

The previous prime is 513252012509. The next prime is 513252012557. The reversal of 513252012531 is 135210252315.

It is not a de Polignac number, because 513252012531 - 2¹⁰ = 513252011507 is a prime.

It is a super-2 number, since 2×513252012531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513252012731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8463540 + ... + 8523966.

It is an arithmetic number, because the mean of its divisors is an integer number (42828345000).

Almost surely, 2^513252012531 is an apocalyptic number.

513252012531 is a deficient number, since it is larger than the sum of its proper divisors (172001507469).

513252012531 is a wasteful number, since it uses less digits than its factorization.

513252012531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64178.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 513252012531 its reverse (135210252315), we get a palindrome (648462264846).

The spelling of 513252012531 in words is "five hundred thirteen billion, two hundred fifty-two million, twelve thousand, five hundred thirty-one".