8455420231 has 2 divisors, whose sum is σ = 8455420232. Its totient is φ = 8455420230.

The previous prime is 8455420219. The next prime is 8455420307. The reversal of 8455420231 is 1320245548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8455420231 - 2⁵ = 8455420199 is a prime.

It is a super-2 number, since 2×8455420231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8455220231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4227710115 + 4227710116.

It is an arithmetic number, because the mean of its divisors is an integer number (4227710116).

Almost surely, 2^8455420231 is an apocalyptic number.

8455420231 is a deficient number, since it is larger than the sum of its proper divisors (1).

8455420231 is an equidigital number, since it uses as much as digits as its factorization.

8455420231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 8455420231 is about 91953.3589979181. The cubic root of 8455420231 is about 2037.2534670837.

Adding to 8455420231 its reverse (1320245548), we get a palindrome (9775665779).

The spelling of 8455420231 in words is "eight billion, four hundred fifty-five million, four hundred twenty thousand, two hundred thirty-one".