4000423331 has 2 divisors, whose sum is σ = 4000423332. Its totient is φ = 4000423330.

The previous prime is 4000423321. The next prime is 4000423351. The reversal of 4000423331 is 1333240004.

It is an a-pointer prime, because the next prime (4000423351) can be obtained adding 4000423331 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000423331 - 2¹⁴ = 4000406947 is a prime.

It is a super-2 number, since 2×4000423331² = 32006773654418271122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4000423321) 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, 2000211665 + 2000211666.

It is an arithmetic number, because the mean of its divisors is an integer number (2000211666).

Almost surely, 2^4000423331 is an apocalyptic number.

4000423331 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000423331 is an equidigital number, since it uses as much as digits as its factorization.

4000423331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 4000423331 is about 63248.8998402344. The cubic root of 4000423331 is about 1587.4570496657.

Adding to 4000423331 its reverse (1333240004), we get a palindrome (5333663335).

The spelling of 4000423331 in words is "four billion, four hundred twenty-three thousand, three hundred thirty-one".