31418671 has 2 divisors, whose sum is σ = 31418672. Its totient is φ = 31418670.

The previous prime is 31418659. The next prime is 31418677. The reversal of 31418671 is 17681413.

It is a strong prime.

It is an emirp because it is prime and its reverse (17681413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31418671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31418677) 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, 15709335 + 15709336.

It is an arithmetic number, because the mean of its divisors is an integer number (15709336).

Almost surely, 2^31418671 is an apocalyptic number.

31418671 is a deficient number, since it is larger than the sum of its proper divisors (1).

31418671 is an equidigital number, since it uses as much as digits as its factorization.

31418671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 31418671 is about 5605.2360342808. The cubic root of 31418671 is about 315.5459449884.

The spelling of 31418671 in words is "thirty-one million, four hundred eighteen thousand, six hundred seventy-one".