513231045554312 has 8 divisors (see below), whose sum is σ = 962308210414350. Its totient is φ = 256615522777152.

The previous prime is 513231045554299. The next prime is 513231045554329. The reversal of 513231045554312 is 213455540132315.

It can be written as a sum of positive squares in only one way, i.e., 432737599103716 + 80493446450596 = 20802346^2 + 8971814^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×513231045554312² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32076940347137 + ... + 32076940347152.

Almost surely, 2^{513231045554312} is an apocalyptic number.

It is an amenable number.

513231045554312 is a deficient number, since it is larger than the sum of its proper divisors (449077164860038).

513231045554312 is a wasteful number, since it uses less digits than its factorization.

513231045554312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64153880694295 (or 64153880694291 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

Adding to 513231045554312 its reverse (213455540132315), we get a palindrome (726686585686627).

The spelling of 513231045554312 in words is "five hundred thirteen trillion, two hundred thirty-one billion, forty-five million, five hundred fifty-four thousand, three hundred twelve".