312121230322103 has 4 divisors (see below), whose sum is σ = 312121326146880. Its totient is φ = 312121134497328.

The previous prime is 312121230322007. The next prime is 312121230322129. The reversal of 312121230322103 is 301223032121213.

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

It is a cyclic number.

It is not a de Polignac number, because 312121230322103 - 2²⁸ = 312120961886647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312121230322193) 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, 42848150 + ... + 49600467.

It is an arithmetic number, because the mean of its divisors is an integer number (78030331536720).

Almost surely, 2^{312121230322103} is an apocalyptic number.

312121230322103 is a deficient number, since it is larger than the sum of its proper divisors (95824777).

312121230322103 is an equidigital number, since it uses as much as digits as its factorization.

312121230322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95824776.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 312121230322103 its reverse (301223032121213), we get a palindrome (613344262443316).

The spelling of 312121230322103 in words is "three hundred twelve trillion, one hundred twenty-one billion, two hundred thirty million, three hundred twenty-two thousand, one hundred three".