6917431 has 2 divisors, whose sum is σ = 6917432. Its totient is φ = 6917430.

The previous prime is 6917381. The next prime is 6917441. The reversal of 6917431 is 1347196.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6917431 - 2⁹ = 6916919 is a prime.

It is a super-2 number, since 2×6917431² = 95701703279522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6917393 and 6917402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6917441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3458715 + 3458716.

It is an arithmetic number, because the mean of its divisors is an integer number (3458716).

Almost surely, 2^6917431 is an apocalyptic number.

6917431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6917431 is an equidigital number, since it uses as much as digits as its factorization.

6917431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 6917431 is about 2630.1009486330. The cubic root of 6917431 is about 190.5380042345.

The spelling of 6917431 in words is "six million, nine hundred seventeen thousand, four hundred thirty-one".