320631345361487 has 2 divisors, whose sum is σ = 320631345361488. Its totient is φ = 320631345361486.

The previous prime is 320631345361471. The next prime is 320631345361631. The reversal of 320631345361487 is 784163543136023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320631345361487 - 2⁴ = 320631345361471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320631345361447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160315672680743 + 160315672680744.

It is an arithmetic number, because the mean of its divisors is an integer number (160315672680744).

Almost surely, 2^{320631345361487} is an apocalyptic number.

320631345361487 is a deficient number, since it is larger than the sum of its proper divisors (1).

320631345361487 is an equidigital number, since it uses as much as digits as its factorization.

320631345361487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 56.

It can be divided in two parts, 32063134536 and 1487, that added together give a palindrome (32063136023).

The spelling of 320631345361487 in words is "three hundred twenty trillion, six hundred thirty-one billion, three hundred forty-five million, three hundred sixty-one thousand, four hundred eighty-seven".