312203030123 has 4 divisors (see below), whose sum is σ = 312353057688. Its totient is φ = 312053002560.

The previous prime is 312203030099. The next prime is 312203030129. The reversal of 312203030123 is 321030302213.

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 312203030123 - 2⁶ = 312203030059 is a prime.

It is a super-4 number, since 4×312203030123⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312203030095 and 312203030104.

It is not an unprimeable number, because it can be changed into a prime (312203030129) 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, 75010661 + ... + 75014822.

It is an arithmetic number, because the mean of its divisors is an integer number (78088264422).

Almost surely, 2^312203030123 is an apocalyptic number.

312203030123 is a deficient number, since it is larger than the sum of its proper divisors (150027565).

312203030123 is a wasteful number, since it uses less digits than its factorization.

312203030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150027564.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 312203030123 its reverse (321030302213), we get a palindrome (633233332336).

The spelling of 312203030123 in words is "three hundred twelve billion, two hundred three million, thirty thousand, one hundred twenty-three".