123010281 has 9 divisors (see below), whose sum is σ = 177729591. Its totient is φ = 81984672.

The previous prime is 123010271. The next prime is 123010301. The reversal of 123010281 is 182010321.

The square root of 123010281 is 11091.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10989225 + 112021056 = 3315^2 + 10584^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 123010281 - 2⁹ = 123009769 is a prime.

It is a super-2 number, since 2×123010281² = 30263058463397922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123010211) 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 in 8 ways as a sum of consecutive naturals, for example, 31425 + ... + 35121.

Almost surely, 2^123010281 is an apocalyptic number.

123010281 is the 11091-st square number.

123010281 is the 5546-th centered octagonal number.

It is an amenable number.

123010281 is a deficient number, since it is larger than the sum of its proper divisors (54719310).

123010281 is an frugal number, since it uses more digits than its factorization.

123010281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400 (or 3700 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The cubic root of 123010281 is about 497.3328391372.

It can be divided in two parts, 1230 and 10281, that added together give a palindrome (11511).

The spelling of 123010281 in words is "one hundred twenty-three million, ten thousand, two hundred eighty-one".