20346071 has 2 divisors, whose sum is σ = 20346072. Its totient is φ = 20346070.

The previous prime is 20346061. The next prime is 20346089. The reversal of 20346071 is 17064302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346071 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173035 + 10173036.

It is an arithmetic number, because the mean of its divisors is an integer number (10173036).

Almost surely, 2^20346071 is an apocalyptic number.

20346071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346071 is an equidigital number, since it uses as much as digits as its factorization.

20346071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20346071 is about 4510.6619248177. The cubic root of 20346071 is about 272.9984524952.

The spelling of 20346071 in words is "twenty million, three hundred forty-six thousand, seventy-one".