210123253 has 2 divisors, whose sum is σ = 210123254. Its totient is φ = 210123252.

The previous prime is 210123203. The next prime is 210123269. The reversal of 210123253 is 352321012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205721649 + 4401604 = 14343^2 + 2098^2 .

It is a cyclic number.

It is not a de Polignac number, because 210123253 - 2²¹ = 208026101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210123253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210123203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061626 + 105061627.

It is an arithmetic number, because the mean of its divisors is an integer number (105061627).

Almost surely, 2^210123253 is an apocalyptic number.

It is an amenable number.

210123253 is a deficient number, since it is larger than the sum of its proper divisors (1).

210123253 is an equidigital number, since it uses as much as digits as its factorization.

210123253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 210123253 is about 14495.6287549040. The cubic root of 210123253 is about 594.5084592338.

Adding to 210123253 its reverse (352321012), we get a palindrome (562444265).

The spelling of 210123253 in words is "two hundred ten million, one hundred twenty-three thousand, two hundred fifty-three".