210123141031117 has 2 divisors, whose sum is σ = 210123141031118. Its totient is φ = 210123141031116.

The previous prime is 210123141031073. The next prime is 210123141031151. The reversal of 210123141031117 is 711130141321012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123556696747236 + 86566444283881 = 11115606^2 + 9304109^2 .

It is a cyclic number.

It is not a de Polignac number, because 210123141031117 - 2⁷ = 210123141030989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210123141031157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061570515558 + 105061570515559.

It is an arithmetic number, because the mean of its divisors is an integer number (105061570515559).

Almost surely, 2^{210123141031117} is an apocalyptic number.

It is an amenable number.

210123141031117 is a deficient number, since it is larger than the sum of its proper divisors (1).

210123141031117 is an equidigital number, since it uses as much as digits as its factorization.

210123141031117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 210123141031117 its reverse (711130141321012), we get a palindrome (921253282352129).

The spelling of 210123141031117 in words is "two hundred ten trillion, one hundred twenty-three billion, one hundred forty-one million, thirty-one thousand, one hundred seventeen".