8421860311 has 2 divisors, whose sum is σ = 8421860312. Its totient is φ = 8421860310.

The previous prime is 8421860309. The next prime is 8421860353. The reversal of 8421860311 is 1130681248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8421860311 - 2¹ = 8421860309 is a prime.

Together with 8421860309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8421860011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210930155 + 4210930156.

It is an arithmetic number, because the mean of its divisors is an integer number (4210930156).

Almost surely, 2^8421860311 is an apocalyptic number.

8421860311 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421860311 is an equidigital number, since it uses as much as digits as its factorization.

8421860311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 8421860311 is about 91770.6941839278. The cubic root of 8421860311 is about 2034.5545782430.

The spelling of 8421860311 in words is "eight billion, four hundred twenty-one million, eight hundred sixty thousand, three hundred eleven".