2031129849169 has 2 divisors, whose sum is σ = 2031129849170. Its totient is φ = 2031129849168.

The previous prime is 2031129849167. The next prime is 2031129849181. The reversal of 2031129849169 is 9619489211302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1778635659025 + 252494190144 = 1333655^2 + 502488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031129849169 - 2¹ = 2031129849167 is a prime.

It is a super-2 number, since 2×2031129849169² (a number of 25 digits) contains 22 as substring.

Together with 2031129849167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2031129849167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015564924584 + 1015564924585.

It is an arithmetic number, because the mean of its divisors is an integer number (1015564924585).

Almost surely, 2^{2031129849169} is an apocalyptic number.

It is an amenable number.

2031129849169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031129849169 is an equidigital number, since it uses as much as digits as its factorization.

2031129849169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 2031129849169 in words is "two trillion, thirty-one billion, one hundred twenty-nine million, eight hundred forty-nine thousand, one hundred sixty-nine".