812246231 has 2 divisors, whose sum is σ = 812246232. Its totient is φ = 812246230.

The previous prime is 812246191. The next prime is 812246249. The reversal of 812246231 is 132642218.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812246231 - 2⁶ = 812246167 is a prime.

It is a super-2 number, since 2×812246231² = 1319487879547410722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 812246194 and 812246203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812246431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406123115 + 406123116.

It is an arithmetic number, because the mean of its divisors is an integer number (406123116).

Almost surely, 2^812246231 is an apocalyptic number.

812246231 is a deficient number, since it is larger than the sum of its proper divisors (1).

812246231 is an equidigital number, since it uses as much as digits as its factorization.

812246231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 812246231 is about 28499.9338771163. The cubic root of 812246231 is about 933.0306308193.

Adding to 812246231 its reverse (132642218), we get a palindrome (944888449).

The spelling of 812246231 in words is "eight hundred twelve million, two hundred forty-six thousand, two hundred thirty-one".