312001302103123 has 4 divisors (see below), whose sum is σ = 313363753204240. Its totient is φ = 310638851002008.

The previous prime is 312001302103103. The next prime is 312001302103163. The reversal of 312001302103123 is 321301203100213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312001302103123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312001302103094 and 312001302103103.

It is not an unprimeable number, because it can be changed into a prime (312001302103103) 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, 681225550215 + ... + 681225550672.

It is an arithmetic number, because the mean of its divisors is an integer number (78340938301060).

Almost surely, 2^{312001302103123} is an apocalyptic number.

312001302103123 is a deficient number, since it is larger than the sum of its proper divisors (1362451101117).

312001302103123 is a wasteful number, since it uses less digits than its factorization.

312001302103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362451101116.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312001302103123 its reverse (321301203100213), we get a palindrome (633302505203336).

The spelling of 312001302103123 in words is "three hundred twelve trillion, one billion, three hundred two million, one hundred three thousand, one hundred twenty-three".