1288949328311 has 2 divisors, whose sum is σ = 1288949328312. Its totient is φ = 1288949328310.

The previous prime is 1288949328307. The next prime is 1288949328391. The reversal of 1288949328311 is 1138239498821.

It is a weak prime.

It is an emirp because it is prime and its reverse (1138239498821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1288949328311 - 2² = 1288949328307 is a prime.

It is a super-2 number, since 2×1288949328311² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288949328301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644474664155 + 644474664156.

It is an arithmetic number, because the mean of its divisors is an integer number (644474664156).

Almost surely, 2^{1288949328311} is an apocalyptic number.

1288949328311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288949328311 is an equidigital number, since it uses as much as digits as its factorization.

1288949328311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 59.

The spelling of 1288949328311 in words is "one trillion, two hundred eighty-eight billion, nine hundred forty-nine million, three hundred twenty-eight thousand, three hundred eleven".