4004423231 has 2 divisors, whose sum is σ = 4004423232. Its totient is φ = 4004423230.

The previous prime is 4004423221. The next prime is 4004423333. The reversal of 4004423231 is 1323244004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4004423231 is a prime.

It is a super-2 number, since 2×4004423231² = 32070810825944958722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4004423197 and 4004423206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4004423221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002211615 + 2002211616.

It is an arithmetic number, because the mean of its divisors is an integer number (2002211616).

Almost surely, 2^4004423231 is an apocalyptic number.

4004423231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4004423231 is an equidigital number, since it uses as much as digits as its factorization.

4004423231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4004423231 is about 63280.5122529835. The cubic root of 4004423231 is about 1587.9859565524.

Adding to 4004423231 its reverse (1323244004), we get a palindrome (5327667235).

The spelling of 4004423231 in words is "four billion, four million, four hundred twenty-three thousand, two hundred thirty-one".