4043123431 has 2 divisors, whose sum is σ = 4043123432. Its totient is φ = 4043123430.

The previous prime is 4043123419. The next prime is 4043123437. The reversal of 4043123431 is 1343213404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4043123431 is a prime.

It is a super-2 number, since 2×4043123431² = 32693694156602423522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4043123396 and 4043123405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4043123437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021561715 + 2021561716.

It is an arithmetic number, because the mean of its divisors is an integer number (2021561716).

Almost surely, 2^4043123431 is an apocalyptic number.

4043123431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043123431 is an equidigital number, since it uses as much as digits as its factorization.

4043123431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 4043123431 is about 63585.5599251906. The cubic root of 4043123431 is about 1593.0851889968.

Adding to 4043123431 its reverse (1343213404), we get a palindrome (5386336835).

The spelling of 4043123431 in words is "four billion, forty-three million, one hundred twenty-three thousand, four hundred thirty-one".