800018231 has 2 divisors, whose sum is σ = 800018232. Its totient is φ = 800018230.

The previous prime is 800018173. The next prime is 800018243. The reversal of 800018231 is 132810008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 800018231 - 2²⁶ = 732909367 is a prime.

It is a super-2 number, since 2×800018231² = 1280058339864738722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 800018197 and 800018206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800018251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400009115 + 400009116.

It is an arithmetic number, because the mean of its divisors is an integer number (400009116).

Almost surely, 2^800018231 is an apocalyptic number.

800018231 is a deficient number, since it is larger than the sum of its proper divisors (1).

800018231 is an equidigital number, since it uses as much as digits as its factorization.

800018231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 800018231 is about 28284.5935272190. The cubic root of 800018231 is about 928.3248184028.

Adding to 800018231 its reverse (132810008), we get a palindrome (932828239).

The spelling of 800018231 in words is "eight hundred million, eighteen thousand, two hundred thirty-one".