123228361 has 8 divisors (see below), whose sum is σ = 124206984. Its totient is φ = 122254080.

The previous prime is 123228353. The next prime is 123228367. The reversal of 123228361 is 163822321.

It can be written as a sum of positive squares in 4 ways, for example, as 11799225 + 111429136 = 3435^2 + 10556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123228361 - 2³ = 123228353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123228367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75591 + ... + 77203.

It is an arithmetic number, because the mean of its divisors is an integer number (15525873).

Almost surely, 2^123228361 is an apocalyptic number.

It is an amenable number.

123228361 is a deficient number, since it is larger than the sum of its proper divisors (978623).

123228361 is a wasteful number, since it uses less digits than its factorization.

123228361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171.

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

The square root of 123228361 is about 11100.8270412614. The cubic root of 123228361 is about 497.6265661165.

It can be divided in two parts, 123 and 228361, that added together give a square (228484 = 478²).

The spelling of 123228361 in words is "one hundred twenty-three million, two hundred twenty-eight thousand, three hundred sixty-one".