123023301281 has 2 divisors, whose sum is σ = 123023301282. Its totient is φ = 123023301280.

The previous prime is 123023301251. The next prime is 123023301337. The reversal of 123023301281 is 182103320321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96481678225 + 26541623056 = 310615^2 + 162916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123023301281 is a prime.

It is a super-2 number, since 2×123023301281² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123023301281.

It is not a weakly prime, because it can be changed into another prime (123023301221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61511650640 + 61511650641.

It is an arithmetic number, because the mean of its divisors is an integer number (61511650641).

Almost surely, 2^123023301281 is an apocalyptic number.

It is an amenable number.

123023301281 is a deficient number, since it is larger than the sum of its proper divisors (1).

123023301281 is an equidigital number, since it uses as much as digits as its factorization.

123023301281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 123023301281 in words is "one hundred twenty-three billion, twenty-three million, three hundred one thousand, two hundred eighty-one".