123315302543101 has 2 divisors, whose sum is σ = 123315302543102. Its totient is φ = 123315302543100.

The previous prime is 123315302543093. The next prime is 123315302543119. The reversal of 123315302543101 is 101345203513321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76087152612025 + 47228149931076 = 8722795^2 + 6872274^2 .

It is an emirp because it is prime and its reverse (101345203513321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123315302543101 - 2³ = 123315302543093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123315302543201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61657651271550 + 61657651271551.

It is an arithmetic number, because the mean of its divisors is an integer number (61657651271551).

Almost surely, 2^{123315302543101} is an apocalyptic number.

It is an amenable number.

123315302543101 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315302543101 is an equidigital number, since it uses as much as digits as its factorization.

123315302543101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 123315302543101 in words is "one hundred twenty-three trillion, three hundred fifteen billion, three hundred two million, five hundred forty-three thousand, one hundred one".