1313033961587 has 2 divisors, whose sum is σ = 1313033961588. Its totient is φ = 1313033961586.

The previous prime is 1313033961541. The next prime is 1313033961601. The reversal of 1313033961587 is 7851693303131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313033961587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313033961287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656516980793 + 656516980794.

It is an arithmetic number, because the mean of its divisors is an integer number (656516980794).

Almost surely, 2^{1313033961587} is an apocalyptic number.

1313033961587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313033961587 is an equidigital number, since it uses as much as digits as its factorization.

1313033961587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 1313033961587 in words is "one trillion, three hundred thirteen billion, thirty-three million, nine hundred sixty-one thousand, five hundred eighty-seven".