4020331423 has 2 divisors, whose sum is σ = 4020331424. Its totient is φ = 4020331422.

The previous prime is 4020331417. The next prime is 4020331439. The reversal of 4020331423 is 3241330204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4020331423 - 2¹³ = 4020323231 is a prime.

It is a super-2 number, since 2×4020331423² = 32326129501522409858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4020331394 and 4020331403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020338423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010165711 + 2010165712.

It is an arithmetic number, because the mean of its divisors is an integer number (2010165712).

Almost surely, 2^4020331423 is an apocalyptic number.

4020331423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020331423 is an equidigital number, since it uses as much as digits as its factorization.

4020331423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 4020331423 is about 63406.0834857350. The cubic root of 4020331423 is about 1590.0860181830.

Adding to 4020331423 its reverse (3241330204), we get a palindrome (7261661627).

The spelling of 4020331423 in words is "four billion, twenty million, three hundred thirty-one thousand, four hundred twenty-three".