2128549101031 has 2 divisors, whose sum is σ = 2128549101032. Its totient is φ = 2128549101030.

The previous prime is 2128549101023. The next prime is 2128549101097. The reversal of 2128549101031 is 1301019458212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128549101031 - 2³ = 2128549101023 is a prime.

It is a super-2 number, since 2×2128549101031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128549101431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064274550515 + 1064274550516.

It is an arithmetic number, because the mean of its divisors is an integer number (1064274550516).

Almost surely, 2^{2128549101031} is an apocalyptic number.

2128549101031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128549101031 is an equidigital number, since it uses as much as digits as its factorization.

2128549101031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 2128549101031 in words is "two trillion, one hundred twenty-eight billion, five hundred forty-nine million, one hundred one thousand, thirty-one".