3240639371 has 2 divisors, whose sum is σ = 3240639372. Its totient is φ = 3240639370.

The previous prime is 3240639361. The next prime is 3240639461. The reversal of 3240639371 is 1739360423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3240639371 - 2¹⁸ = 3240377227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3240639361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620319685 + 1620319686.

It is an arithmetic number, because the mean of its divisors is an integer number (1620319686).

Almost surely, 2^3240639371 is an apocalyptic number.

3240639371 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240639371 is an equidigital number, since it uses as much as digits as its factorization.

3240639371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 3240639371 is about 56926.6139077321. The cubic root of 3240639371 is about 1479.8245730409.

Adding to 3240639371 its reverse (1739360423), we get a palindrome (4979999794).

The spelling of 3240639371 in words is "three billion, two hundred forty million, six hundred thirty-nine thousand, three hundred seventy-one".