4020031349 has 2 divisors, whose sum is σ = 4020031350. Its totient is φ = 4020031348.

The previous prime is 4020031339. The next prime is 4020031363. The reversal of 4020031349 is 9431300204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3183780625 + 836250724 = 56425^2 + 28918^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020031349 - 2¹⁶ = 4019965813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020031339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010015674 + 2010015675.

It is an arithmetic number, because the mean of its divisors is an integer number (2010015675).

Almost surely, 2^4020031349 is an apocalyptic number.

It is an amenable number.

4020031349 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020031349 is an equidigital number, since it uses as much as digits as its factorization.

4020031349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 4020031349 is about 63403.7171544382. The cubic root of 4020031349 is about 1590.0464563250.

The spelling of 4020031349 in words is "four billion, twenty million, thirty-one thousand, three hundred forty-nine".