210123030253 has 2 divisors, whose sum is σ = 210123030254. Its totient is φ = 210123030252.

The previous prime is 210123030217. The next prime is 210123030317. The reversal of 210123030253 is 352030321012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177411967209 + 32711063044 = 421203^2 + 180862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210123030253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210123030053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061515126 + 105061515127.

It is an arithmetic number, because the mean of its divisors is an integer number (105061515127).

Almost surely, 2^210123030253 is an apocalyptic number.

It is an amenable number.

210123030253 is a deficient number, since it is larger than the sum of its proper divisors (1).

210123030253 is an equidigital number, since it uses as much as digits as its factorization.

210123030253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 210123030253 its reverse (352030321012), we get a palindrome (562153351265).

The spelling of 210123030253 in words is "two hundred ten billion, one hundred twenty-three million, thirty thousand, two hundred fifty-three".