512031213 has 10 divisors (see below), whose sum is σ = 764886254. Its totient is φ = 341354088.

The previous prime is 512031193. The next prime is 512031217. The reversal of 512031213 is 312130215.

It can be written as a sum of positive squares in only one way, i.e., 370254564 + 141776649 = 19242^2 + 11907^2 .

It is not a de Polignac number, because 512031213 - 2⁵ = 512031181 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 (512031217) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3160606 + ... + 3160767.

Almost surely, 2^512031213 is an apocalyptic number.

It is an amenable number.

512031213 is a deficient number, since it is larger than the sum of its proper divisors (252855041).

512031213 is an equidigital number, since it uses as much as digits as its factorization.

512031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321385 (or 6321376 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 512031213 is about 22628.1067038319. The cubic root of 512031213 is about 800.0162564405.

Adding to 512031213 its reverse (312130215), we get a palindrome (824161428).

The spelling of 512031213 in words is "five hundred twelve million, thirty-one thousand, two hundred thirteen".