123311201 has 4 divisors (see below), whose sum is σ = 132796692. Its totient is φ = 113825712.

The previous prime is 123311173. The next prime is 123311207. The reversal of 123311201 is 102113321.

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 41589601 + 81721600 = 6449^2 + 9040^2 .

It is not a de Polignac number, because 123311201 - 2¹⁴ = 123294817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123311207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4742726 + ... + 4742751.

It is an arithmetic number, because the mean of its divisors is an integer number (33199173).

Almost surely, 2^123311201 is an apocalyptic number.

It is an amenable number.

123311201 is a deficient number, since it is larger than the sum of its proper divisors (9485491).

123311201 is an equidigital number, since it uses as much as digits as its factorization.

123311201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485490.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123311201 is about 11104.5576679128. The cubic root of 123311201 is about 497.7380506006.

Adding to 123311201 its reverse (102113321), we get a palindrome (225424522).

The spelling of 123311201 in words is "one hundred twenty-three million, three hundred eleven thousand, two hundred one".