123311212301 has 4 divisors (see below), whose sum is σ = 127563323100. Its totient is φ = 119059101504.

The previous prime is 123311212249. The next prime is 123311212373. The reversal of 123311212301 is 103212113321.

It is a happy number.

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 64249575625 + 59061636676 = 253475^2 + 243026^2 .

It is a cyclic number.

It is not a de Polignac number, because 123311212301 - 2³⁰ = 122237470477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311212901) 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, 2126055356 + ... + 2126055413.

It is an arithmetic number, because the mean of its divisors is an integer number (31890830775).

Almost surely, 2^123311212301 is an apocalyptic number.

It is an amenable number.

123311212301 is a deficient number, since it is larger than the sum of its proper divisors (4252110799).

123311212301 is an equidigital number, since it uses as much as digits as its factorization.

123311212301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252110798.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123311212301 its reverse (103212113321), we get a palindrome (226523325622).

The spelling of 123311212301 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred twelve thousand, three hundred one".