512231123 has 2 divisors, whose sum is σ = 512231124. Its totient is φ = 512231122.

The previous prime is 512231099. The next prime is 512231129. The reversal of 512231123 is 321132215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512231123 - 2⁶ = 512231059 is a prime.

It is a super-2 number, since 2×512231123² = 524761446739682258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 512231095 and 512231104.

It is not a weakly prime, because it can be changed into another prime (512231129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256115561 + 256115562.

It is an arithmetic number, because the mean of its divisors is an integer number (256115562).

Almost surely, 2^512231123 is an apocalyptic number.

512231123 is a deficient number, since it is larger than the sum of its proper divisors (1).

512231123 is an equidigital number, since it uses as much as digits as its factorization.

512231123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 512231123 is about 22632.5235667612. The cubic root of 512231123 is about 800.1203584539.

Adding to 512231123 its reverse (321132215), we get a palindrome (833363338).

The spelling of 512231123 in words is "five hundred twelve million, two hundred thirty-one thousand, one hundred twenty-three".