513231130643 has 96 divisors (see below), whose sum is σ = 685787067648. Its totient is φ = 379409184000.

The previous prime is 513231130567. The next prime is 513231130663. The reversal of 513231130643 is 346031132315.

It is not a de Polignac number, because 513231130643 - 2¹² = 513231126547 is a prime.

It is a super-2 number, since 2×513231130643² (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 (513231130663) 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 95 ways as a sum of consecutive naturals, for example, 134952380 + ... + 134956182.

It is an arithmetic number, because the mean of its divisors is an integer number (7143615288).

Almost surely, 2^513231130643 is an apocalyptic number.

513231130643 is a deficient number, since it is larger than the sum of its proper divisors (172555937005).

513231130643 is a wasteful number, since it uses less digits than its factorization.

513231130643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 513231130643 its reverse (346031132315), we get a palindrome (859262262958).

The spelling of 513231130643 in words is "five hundred thirteen billion, two hundred thirty-one million, one hundred thirty thousand, six hundred forty-three".