210342101623 has 2 divisors, whose sum is σ = 210342101624. Its totient is φ = 210342101622.

The previous prime is 210342101621. The next prime is 210342101659. The reversal of 210342101623 is 326101243012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210342101623 - 2¹ = 210342101621 is a prime.

Together with 210342101621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210342101621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105171050811 + 105171050812.

It is an arithmetic number, because the mean of its divisors is an integer number (105171050812).

Almost surely, 2^210342101623 is an apocalyptic number.

210342101623 is a deficient number, since it is larger than the sum of its proper divisors (1).

210342101623 is an equidigital number, since it uses as much as digits as its factorization.

210342101623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 210342101623 its reverse (326101243012), we get a palindrome (536443344635).

The spelling of 210342101623 in words is "two hundred ten billion, three hundred forty-two million, one hundred one thousand, six hundred twenty-three".