8424931321 has 2 divisors, whose sum is σ = 8424931322. Its totient is φ = 8424931320.

The previous prime is 8424931301. The next prime is 8424931367. The reversal of 8424931321 is 1231394248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8325650025 + 99281296 = 91245^2 + 9964^2 .

It is a cyclic number.

It is not a de Polignac number, because 8424931321 - 2¹¹ = 8424929273 is a prime.

It is not a weakly prime, because it can be changed into another prime (8424931301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212465660 + 4212465661.

It is an arithmetic number, because the mean of its divisors is an integer number (4212465661).

Almost surely, 2^8424931321 is an apocalyptic number.

It is an amenable number.

8424931321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8424931321 is an equidigital number, since it uses as much as digits as its factorization.

8424931321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 8424931321 is about 91787.4246343147. The cubic root of 8424931321 is about 2034.8018465789.

The spelling of 8424931321 in words is "eight billion, four hundred twenty-four million, nine hundred thirty-one thousand, three hundred twenty-one".