123346681 has 2 divisors, whose sum is σ = 123346682. Its totient is φ = 123346680.

The previous prime is 123346673. The next prime is 123346703. The reversal of 123346681 is 186643321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123010281 + 336400 = 11091^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 123346681 - 2³ = 123346673 is a prime.

It is a super-2 number, since 2×123346681² = 30428807427431522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123346481) 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, 61673340 + 61673341.

It is an arithmetic number, because the mean of its divisors is an integer number (61673341).

Almost surely, 2^123346681 is an apocalyptic number.

It is an amenable number.

123346681 is a deficient number, since it is larger than the sum of its proper divisors (1).

123346681 is an equidigital number, since it uses as much as digits as its factorization.

123346681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 123346681 is about 11106.1550952614. The cubic root of 123346681 is about 497.7857836328.

The spelling of 123346681 in words is "one hundred twenty-three million, three hundred forty-six thousand, six hundred eighty-one".