123031012073 has 2 divisors, whose sum is σ = 123031012074. Its totient is φ = 123031012072.

The previous prime is 123031012021. The next prime is 123031012079. The reversal of 123031012073 is 370210130321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98497428649 + 24533583424 = 313843^2 + 156632^2 .

It is a cyclic number.

It is not a de Polignac number, because 123031012073 - 2³⁶ = 54311535337 is a prime.

It is not a weakly prime, because it can be changed into another prime (123031012079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515506036 + 61515506037.

It is an arithmetic number, because the mean of its divisors is an integer number (61515506037).

Almost surely, 2^123031012073 is an apocalyptic number.

It is an amenable number.

123031012073 is a deficient number, since it is larger than the sum of its proper divisors (1).

123031012073 is an equidigital number, since it uses as much as digits as its factorization.

123031012073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 123031012073 its reverse (370210130321), we get a palindrome (493241142394).

The spelling of 123031012073 in words is "one hundred twenty-three billion, thirty-one million, twelve thousand, seventy-three".