4023431 has 4 divisors (see below), whose sum is σ = 4162200. Its totient is φ = 3884664.

The previous prime is 4023401. The next prime is 4023469. The reversal of 4023431 is 1343204.

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 4023431 - 2¹⁰ = 4022407 is a prime.

It is a super-2 number, since 2×4023431² = 32375994023522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023401) 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, 69341 + ... + 69398.

It is an arithmetic number, because the mean of its divisors is an integer number (1040550).

Almost surely, 2^4023431 is an apocalyptic number.

4023431 is a deficient number, since it is larger than the sum of its proper divisors (138769).

4023431 is a wasteful number, since it uses less digits than its factorization.

4023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138768.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 4023431 is about 2005.8491967244. The cubic root of 4023431 is about 159.0494552328.

Adding to 4023431 its reverse (1343204), we get a palindrome (5366635).

The spelling of 4023431 in words is "four million, twenty-three thousand, four hundred thirty-one".