4047431 has 2 divisors, whose sum is σ = 4047432. Its totient is φ = 4047430.

The previous prime is 4047419. The next prime is 4047469. The reversal of 4047431 is 1347404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4047431 - 2⁶ = 4047367 is a prime.

It is a super-2 number, since 2×4047431² = 32763395399522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4047397 and 4047406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4047331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023715 + 2023716.

It is an arithmetic number, because the mean of its divisors is an integer number (2023716).

Almost surely, 2^4047431 is an apocalyptic number.

4047431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4047431 is an equidigital number, since it uses as much as digits as its factorization.

4047431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 4047431 is about 2011.8228053186. The cubic root of 4047431 is about 159.3650749170.

The spelling of 4047431 in words is "four million, forty-seven thousand, four hundred thirty-one".