3215434681 has 2 divisors, whose sum is σ = 3215434682. Its totient is φ = 3215434680.

The previous prime is 3215434627. The next prime is 3215434699. The reversal of 3215434681 is 1864345123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2428912656 + 786522025 = 49284^2 + 28045^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215434681 - 2¹⁹ = 3214910393 is a prime.

It is a super-3 number, since 3×3215434681³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3215434681.

It is not a weakly prime, because it can be changed into another prime (3215434601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607717340 + 1607717341.

It is an arithmetic number, because the mean of its divisors is an integer number (1607717341).

Almost surely, 2^3215434681 is an apocalyptic number.

It is an amenable number.

3215434681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215434681 is an equidigital number, since it uses as much as digits as its factorization.

3215434681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 3215434681 is about 56704.8029799946. The cubic root of 3215434681 is about 1475.9780442003.

The spelling of 3215434681 in words is "three billion, two hundred fifteen million, four hundred thirty-four thousand, six hundred eighty-one".