4347320981 has 2 divisors, whose sum is σ = 4347320982. Its totient is φ = 4347320980.

The previous prime is 4347320959. The next prime is 4347320993. The reversal of 4347320981 is 1890237434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2500900081 + 1846420900 = 50009^2 + 42970^2 .

It is a cyclic number.

It is not a de Polignac number, because 4347320981 - 2¹⁴ = 4347304597 is a prime.

It is a super-2 number, since 2×4347320981² = 37798399423685604722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4347328981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2173660490 + 2173660491.

It is an arithmetic number, because the mean of its divisors is an integer number (2173660491).

Almost surely, 2^4347320981 is an apocalyptic number.

It is an amenable number.

4347320981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4347320981 is an equidigital number, since it uses as much as digits as its factorization.

4347320981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 4347320981 is about 65934.2170727764. The cubic root of 4347320981 is about 1632.0767163101.

The spelling of 4347320981 in words is "four billion, three hundred forty-seven million, three hundred twenty thousand, nine hundred eighty-one".