312121203203123 has 8 divisors (see below), whose sum is σ = 320559059799888. Its totient is φ = 303683459680224.

The previous prime is 312121203203059. The next prime is 312121203203129. The reversal of 312121203203123 is 321302302121213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312121203203123 - 2⁶ = 312121203203059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312121203203092 and 312121203203101.

It is not an unprimeable number, because it can be changed into a prime (312121203203129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22658336 + ... + 33728957.

It is an arithmetic number, because the mean of its divisors is an integer number (40069882474986).

Almost surely, 2^{312121203203123} is an apocalyptic number.

312121203203123 is a deficient number, since it is larger than the sum of its proper divisors (8437856596765).

312121203203123 is a wasteful number, since it uses less digits than its factorization.

312121203203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56536933.

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

Adding to 312121203203123 its reverse (321302302121213), we get a palindrome (633423505324336).

The spelling of 312121203203123 in words is "three hundred twelve trillion, one hundred twenty-one billion, two hundred three million, two hundred three thousand, one hundred twenty-three".