1331455247387 has 2 divisors, whose sum is σ = 1331455247388. Its totient is φ = 1331455247386.

The previous prime is 1331455247371. The next prime is 1331455247497. The reversal of 1331455247387 is 7837425541331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331455247387 - 2⁴ = 1331455247371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331455247357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665727623693 + 665727623694.

It is an arithmetic number, because the mean of its divisors is an integer number (665727623694).

Almost surely, 2^{1331455247387} is an apocalyptic number.

1331455247387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331455247387 is an equidigital number, since it uses as much as digits as its factorization.

1331455247387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 53.

The spelling of 1331455247387 in words is "one trillion, three hundred thirty-one billion, four hundred fifty-five million, two hundred forty-seven thousand, three hundred eighty-seven".