3256319987 has 2 divisors, whose sum is σ = 3256319988. Its totient is φ = 3256319986.

The previous prime is 3256319981. The next prime is 3256320019. The reversal of 3256319987 is 7899136523.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3256319987 - 2¹⁰ = 3256318963 is a prime.

It is not a weakly prime, because it can be changed into another prime (3256319981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628159993 + 1628159994.

It is an arithmetic number, because the mean of its divisors is an integer number (1628159994).

Almost surely, 2^3256319987 is an apocalyptic number.

3256319987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3256319987 is an equidigital number, since it uses as much as digits as its factorization.

3256319987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 3256319987 is about 57064.1742864996. The cubic root of 3256319987 is about 1482.2075630988.

The spelling of 3256319987 in words is "three billion, two hundred fifty-six million, three hundred nineteen thousand, nine hundred eighty-seven".