210397223 has 2 divisors, whose sum is σ = 210397224. Its totient is φ = 210397222.

The previous prime is 210397183. The next prime is 210397247. The reversal of 210397223 is 322793012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210397223 - 2²⁰ = 209348647 is a prime.

It is a super-2 number, since 2×210397223² = 88533982892223458, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210393223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105198611 + 105198612.

It is an arithmetic number, because the mean of its divisors is an integer number (105198612).

Almost surely, 2^210397223 is an apocalyptic number.

210397223 is a deficient number, since it is larger than the sum of its proper divisors (1).

210397223 is an equidigital number, since it uses as much as digits as its factorization.

210397223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 210397223 is about 14505.0757667790. The cubic root of 210397223 is about 594.7667310529.

The spelling of 210397223 in words is "two hundred ten million, three hundred ninety-seven thousand, two hundred twenty-three".