6209431 has 2 divisors, whose sum is σ = 6209432. Its totient is φ = 6209430.

The previous prime is 6209429. The next prime is 6209443. The reversal of 6209431 is 1349026.

6209431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6209431 - 2¹ = 6209429 is a prime.

It is a super-2 number, since 2×6209431² = 77114066687522, which contains 22 as substring.

Together with 6209429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6209396 and 6209405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6209461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3104715 + 3104716.

It is an arithmetic number, because the mean of its divisors is an integer number (3104716).

Almost surely, 2^6209431 is an apocalyptic number.

6209431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6209431 is an equidigital number, since it uses as much as digits as its factorization.

6209431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6209431 is about 2491.8729903428. The cubic root of 6209431 is about 183.8021562034.

It can be divided in two parts, 620943 and 1, that added together give a square (620944 = 788²).

The spelling of 6209431 in words is "six million, two hundred nine thousand, four hundred thirty-one".