31066423 has 2 divisors, whose sum is σ = 31066424. Its totient is φ = 31066422.

The previous prime is 31066411. The next prime is 31066439. The reversal of 31066423 is 32466013.

It is a weak prime.

It is an emirp because it is prime and its reverse (32466013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31066423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31066223) 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, 15533211 + 15533212.

It is an arithmetic number, because the mean of its divisors is an integer number (15533212).

Almost surely, 2^31066423 is an apocalyptic number.

31066423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31066423 is an equidigital number, since it uses as much as digits as its factorization.

31066423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 31066423 is about 5573.7261324898. The cubic root of 31066423 is about 314.3622706950.

The spelling of 31066423 in words is "thirty-one million, sixty-six thousand, four hundred twenty-three".