123630481 has 4 divisors (see below), whose sum is σ = 133140532. Its totient is φ = 114120432.

The previous prime is 123630433. The next prime is 123630491. The reversal of 123630481 is 184036321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16321600 + 107308881 = 4040^2 + 10359^2 .

It is a cyclic number.

It is not a de Polignac number, because 123630481 - 2⁹ = 123629969 is a prime.

It is a super-2 number, since 2×123630481² = 30568991664582722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123630491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4755006 + ... + 4755031.

It is an arithmetic number, because the mean of its divisors is an integer number (33285133).

Almost surely, 2^123630481 is an apocalyptic number.

It is an amenable number.

123630481 is a deficient number, since it is larger than the sum of its proper divisors (9510051).

123630481 is an equidigital number, since it uses as much as digits as its factorization.

123630481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510050.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 123630481 is about 11118.9244533813. The cubic root of 123630481 is about 498.1672650398.

The spelling of 123630481 in words is "one hundred twenty-three million, six hundred thirty thousand, four hundred eighty-one".