4002423431 has 4 divisors (see below), whose sum is σ = 4058795664. Its totient is φ = 3946051200.

The previous prime is 4002423413. The next prime is 4002423443. The reversal of 4002423431 is 1343242004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4002423431 - 2²⁶ = 3935314567 is a prime.

It is a super-2 number, since 2×4002423431² = 32038786642035623522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4002423397 and 4002423406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002423031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28186010 + ... + 28186151.

It is an arithmetic number, because the mean of its divisors is an integer number (1014698916).

Almost surely, 2^4002423431 is an apocalyptic number.

4002423431 is a deficient number, since it is larger than the sum of its proper divisors (56372233).

4002423431 is an equidigital number, since it uses as much as digits as its factorization.

4002423431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56372232.

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

The square root of 4002423431 is about 63264.7092066343. The cubic root of 4002423431 is about 1587.7215669913.

Adding to 4002423431 its reverse (1343242004), we get a palindrome (5345665435).

The spelling of 4002423431 in words is "four billion, two million, four hundred twenty-three thousand, four hundred thirty-one".