512231321534 has 4 divisors (see below), whose sum is σ = 768346982304. Its totient is φ = 256115660766.

The previous prime is 512231321521. The next prime is 512231321557. The reversal of 512231321534 is 435123132215.

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

It is a super-2 number, since 2×512231321534² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 512231321534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128057830382 + ... + 128057830385.

It is an arithmetic number, because the mean of its divisors is an integer number (192086745576).

Almost surely, 2^512231321534 is an apocalyptic number.

512231321534 is a deficient number, since it is larger than the sum of its proper divisors (256115660770).

512231321534 is a wasteful number, since it uses less digits than its factorization.

512231321534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256115660769.

The product of its digits is 21600, while the sum is 32.

Adding to 512231321534 its reverse (435123132215), we get a palindrome (947354453749).

The spelling of 512231321534 in words is "five hundred twelve billion, two hundred thirty-one million, three hundred twenty-one thousand, five hundred thirty-four".