210542323 has 2 divisors, whose sum is σ = 210542324. Its totient is φ = 210542322.

The previous prime is 210542317. The next prime is 210542351. The reversal of 210542323 is 323245012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210542323 - 2²⁵ = 176987891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210542294 and 210542303.

It is not a weakly prime, because it can be changed into another prime (210542383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105271161 + 105271162.

It is an arithmetic number, because the mean of its divisors is an integer number (105271162).

Almost surely, 2^210542323 is an apocalyptic number.

210542323 is a deficient number, since it is larger than the sum of its proper divisors (1).

210542323 is an equidigital number, since it uses as much as digits as its factorization.

210542323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 210542323 is about 14510.0766021410. The cubic root of 210542323 is about 594.9034261734.

Adding to 210542323 its reverse (323245012), we get a palindrome (533787335).

The spelling of 210542323 in words is "two hundred ten million, five hundred forty-two thousand, three hundred twenty-three".