823070201 has 2 divisors, whose sum is σ = 823070202. Its totient is φ = 823070200.

The previous prime is 823070167. The next prime is 823070207. The reversal of 823070201 is 102070328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820879801 + 2190400 = 28651^2 + 1480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823070201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (823070207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411535100 + 411535101.

It is an arithmetic number, because the mean of its divisors is an integer number (411535101).

Almost surely, 2^823070201 is an apocalyptic number.

It is an amenable number.

823070201 is a deficient number, since it is larger than the sum of its proper divisors (1).

823070201 is an equidigital number, since it uses as much as digits as its factorization.

823070201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 823070201 is about 28689.2000759868. The cubic root of 823070201 is about 937.1568691769.

The spelling of 823070201 in words is "eight hundred twenty-three million, seventy thousand, two hundred one".