123543321701 has 2 divisors, whose sum is σ = 123543321702. Its totient is φ = 123543321700.

The previous prime is 123543321697. The next prime is 123543321751. The reversal of 123543321701 is 107123345321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80445976900 + 43097344801 = 283630^2 + 207599^2 .

It is a cyclic number.

It is not a de Polignac number, because 123543321701 - 2² = 123543321697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123543321751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61771660850 + 61771660851.

It is an arithmetic number, because the mean of its divisors is an integer number (61771660851).

Almost surely, 2^123543321701 is an apocalyptic number.

It is an amenable number.

123543321701 is a deficient number, since it is larger than the sum of its proper divisors (1).

123543321701 is an equidigital number, since it uses as much as digits as its factorization.

123543321701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 123543321701 in words is "one hundred twenty-three billion, five hundred forty-three million, three hundred twenty-one thousand, seven hundred one".