3215361841 has 2 divisors, whose sum is σ = 3215361842. Its totient is φ = 3215361840.

The previous prime is 3215361839. The next prime is 3215361847. The reversal of 3215361841 is 1481635123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3215343616 + 18225 = 56704^2 + 135^2 .

It is an emirp because it is prime and its reverse (1481635123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3215361841 - 2¹ = 3215361839 is a prime.

Together with 3215361839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3215361797 and 3215361806.

It is not a weakly prime, because it can be changed into another prime (3215361847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607680920 + 1607680921.

It is an arithmetic number, because the mean of its divisors is an integer number (1607680921).

Almost surely, 2^3215361841 is an apocalyptic number.

It is an amenable number.

3215361841 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215361841 is an equidigital number, since it uses as much as digits as its factorization.

3215361841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 3215361841 is about 56704.1607027209. The cubic root of 3215361841 is about 1475.9668988900.

Adding to 3215361841 its reverse (1481635123), we get a palindrome (4696996964).

The spelling of 3215361841 in words is "three billion, two hundred fifteen million, three hundred sixty-one thousand, eight hundred forty-one".