12312100320103 has 4 divisors (see below), whose sum is σ = 12598428234568. Its totient is φ = 12025772405640.

The previous prime is 12312100320029. The next prime is 12312100320109. The reversal of 12312100320103 is 30102300121321.

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 12312100320103 - 2¹³ = 12312100311911 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 (12312100320109) 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, 143163957168 + ... + 143163957253.

It is an arithmetic number, because the mean of its divisors is an integer number (3149607058642).

Almost surely, 2^{12312100320103} is an apocalyptic number.

12312100320103 is a deficient number, since it is larger than the sum of its proper divisors (286327914465).

12312100320103 is an equidigital number, since it uses as much as digits as its factorization.

12312100320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286327914464.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12312100320103 its reverse (30102300121321), we get a palindrome (42414400441424).

The spelling of 12312100320103 in words is "twelve trillion, three hundred twelve billion, one hundred million, three hundred twenty thousand, one hundred three".