210117023 has 2 divisors, whose sum is σ = 210117024. Its totient is φ = 210117022.

The previous prime is 210117007. The next prime is 210117053. The reversal of 210117023 is 320711012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210117023 - 2⁴ = 210117007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210116992 and 210117010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210117053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105058511 + 105058512.

It is an arithmetic number, because the mean of its divisors is an integer number (105058512).

Almost surely, 2^210117023 is an apocalyptic number.

210117023 is a deficient number, since it is larger than the sum of its proper divisors (1).

210117023 is an equidigital number, since it uses as much as digits as its factorization.

210117023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 210117023 is about 14495.4138609424. The cubic root of 210117023 is about 594.5025835961.

Adding to 210117023 its reverse (320711012), we get a palindrome (530828035).

The spelling of 210117023 in words is "two hundred ten million, one hundred seventeen thousand, twenty-three".