512103025231 has 4 divisors (see below), whose sum is σ = 585260600272. Its totient is φ = 438945450192.

The previous prime is 512103025223. The next prime is 512103025271. The reversal of 512103025231 is 132520301215.

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

It is a cyclic number.

It is not a de Polignac number, because 512103025231 - 2³ = 512103025223 is a prime.

It is a super-2 number, since 2×512103025231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512103025196 and 512103025205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512103025201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36578787510 + ... + 36578787523.

It is an arithmetic number, because the mean of its divisors is an integer number (146315150068).

Almost surely, 2^512103025231 is an apocalyptic number.

512103025231 is a deficient number, since it is larger than the sum of its proper divisors (73157575041).

512103025231 is an equidigital number, since it uses as much as digits as its factorization.

512103025231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73157575040.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 512103025231 its reverse (132520301215), we get a palindrome (644623326446).

The spelling of 512103025231 in words is "five hundred twelve billion, one hundred three million, twenty-five thousand, two hundred thirty-one".