84461231 has 2 divisors, whose sum is σ = 84461232. Its totient is φ = 84461230.

The previous prime is 84461227. The next prime is 84461233. The reversal of 84461231 is 13216448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84461231 - 2² = 84461227 is a prime.

It is a super-2 number, since 2×84461231² = 14267399084070722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 84461233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84461194 and 84461203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84461233) 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, 42230615 + 42230616.

It is an arithmetic number, because the mean of its divisors is an integer number (42230616).

Almost surely, 2^84461231 is an apocalyptic number.

84461231 is a deficient number, since it is larger than the sum of its proper divisors (1).

84461231 is an equidigital number, since it uses as much as digits as its factorization.

84461231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 84461231 is about 9190.2791578929. The cubic root of 84461231 is about 438.7520267328.

Adding to 84461231 its reverse (13216448), we get a palindrome (97677679).

The spelling of 84461231 in words is "eighty-four million, four hundred sixty-one thousand, two hundred thirty-one".