217025023 has 2 divisors, whose sum is σ = 217025024. Its totient is φ = 217025022.

The previous prime is 217025021. The next prime is 217025027. The reversal of 217025023 is 320520712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217025023 - 2¹ = 217025021 is a prime.

Together with 217025021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 217024985 and 217025003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217025021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108512511 + 108512512.

It is an arithmetic number, because the mean of its divisors is an integer number (108512512).

Almost surely, 2^217025023 is an apocalyptic number.

217025023 is a deficient number, since it is larger than the sum of its proper divisors (1).

217025023 is an equidigital number, since it uses as much as digits as its factorization.

217025023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 217025023 is about 14731.7691741352. The cubic root of 217025023 is about 600.9475980125.

Adding to 217025023 its reverse (320520712), we get a palindrome (537545735).

The spelling of 217025023 in words is "two hundred seventeen million, twenty-five thousand, twenty-three".