123010311043181 has 2 divisors, whose sum is σ = 123010311043182. Its totient is φ = 123010311043180.

The previous prime is 123010311043177. The next prime is 123010311043189. The reversal of 123010311043181 is 181340113010321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68671800054025 + 54338510989156 = 8286845^2 + 7371466^2 .

It is a cyclic number.

It is not a de Polignac number, because 123010311043181 - 2² = 123010311043177 is a prime.

It is a super-2 number, since 2×123010311043181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123010311043189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505155521590 + 61505155521591.

It is an arithmetic number, because the mean of its divisors is an integer number (61505155521591).

Almost surely, 2^{123010311043181} is an apocalyptic number.

It is an amenable number.

123010311043181 is a deficient number, since it is larger than the sum of its proper divisors (1).

123010311043181 is an equidigital number, since it uses as much as digits as its factorization.

123010311043181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 123010311043181 in words is "one hundred twenty-three trillion, ten billion, three hundred eleven million, forty-three thousand, one hundred eighty-one".