3487131385847 has 2 divisors, whose sum is σ = 3487131385848. Its totient is φ = 3487131385846.

The previous prime is 3487131385783. The next prime is 3487131385849. The reversal of 3487131385847 is 7485831317843.

It is a happy number.

3487131385847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3487131385847 - 2⁶ = 3487131385783 is a prime.

Together with 3487131385849, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3487131385847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3487131385849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1743565692923 + 1743565692924.

It is an arithmetic number, because the mean of its divisors is an integer number (1743565692924).

Almost surely, 2^{3487131385847} is an apocalyptic number.

3487131385847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3487131385847 is an equidigital number, since it uses as much as digits as its factorization.

3487131385847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54190080, while the sum is 62.

The spelling of 3487131385847 in words is "three trillion, four hundred eighty-seven billion, one hundred thirty-one million, three hundred eighty-five thousand, eight hundred forty-seven".