208270423 has 2 divisors, whose sum is σ = 208270424. Its totient is φ = 208270422.

The previous prime is 208270367. The next prime is 208270453. The reversal of 208270423 is 324072802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208270423 - 2¹³ = 208262231 is a prime.

It is equal to p_11511289 and since 208270423 and 11511289 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 208270391 and 208270400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208270453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104135211 + 104135212.

It is an arithmetic number, because the mean of its divisors is an integer number (104135212).

Almost surely, 2^208270423 is an apocalyptic number.

208270423 is a deficient number, since it is larger than the sum of its proper divisors (1).

208270423 is an equidigital number, since it uses as much as digits as its factorization.

208270423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 208270423 is about 14431.5772873238. The cubic root of 208270423 is about 592.7558739828.

The spelling of 208270423 in words is "two hundred eight million, two hundred seventy thousand, four hundred twenty-three".