4021031312329 has 2 divisors, whose sum is σ = 4021031312330. Its totient is φ = 4021031312328.

The previous prime is 4021031312281. The next prime is 4021031312357. The reversal of 4021031312329 is 9232131301204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2935475702329 + 1085555610000 = 1713323^2 + 1041900^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021031312329 - 2²⁹ = 4020494441417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4021031312329.

It is not a weakly prime, because it can be changed into another prime (4021031312359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010515656164 + 2010515656165.

It is an arithmetic number, because the mean of its divisors is an integer number (2010515656165).

Almost surely, 2^{4021031312329} is an apocalyptic number.

It is an amenable number.

4021031312329 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021031312329 is an equidigital number, since it uses as much as digits as its factorization.

4021031312329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 4021031312329 in words is "four trillion, twenty-one billion, thirty-one million, three hundred twelve thousand, three hundred twenty-nine".