9509431 has 2 divisors, whose sum is σ = 9509432. Its totient is φ = 9509430.

The previous prime is 9509413. The next prime is 9509441. The reversal of 9509431 is 1349059.

Together with previous prime (9509413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1349059) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9509431 - 2⁵ = 9509399 is a prime.

It is a super-2 number, since 2×9509431² = 180858555887522, 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 = 9509393 and 9509402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9509441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4754715 + 4754716.

It is an arithmetic number, because the mean of its divisors is an integer number (4754716).

Almost surely, 2^9509431 is an apocalyptic number.

9509431 is a deficient number, since it is larger than the sum of its proper divisors (1).

9509431 is an equidigital number, since it uses as much as digits as its factorization.

9509431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 9509431 is about 3083.7365321960. The cubic root of 9509431 is about 211.8612403359.

The spelling of 9509431 in words is "nine million, five hundred nine thousand, four hundred thirty-one".