4021231349 has 2 divisors, whose sum is σ = 4021231350. Its totient is φ = 4021231348.

The previous prime is 4021231273. The next prime is 4021231351. The reversal of 4021231349 is 9431321204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3900627025 + 120604324 = 62455^2 + 10982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021231349 is a prime.

Together with 4021231351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021231849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010615674 + 2010615675.

It is an arithmetic number, because the mean of its divisors is an integer number (2010615675).

Almost surely, 2^4021231349 is an apocalyptic number.

It is an amenable number.

4021231349 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021231349 is an equidigital number, since it uses as much as digits as its factorization.

4021231349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 4021231349 is about 63413.1796159127. The cubic root of 4021231349 is about 1590.2046529291.

The spelling of 4021231349 in words is "four billion, twenty-one million, two hundred thirty-one thousand, three hundred forty-nine".