312000022123 has 4 divisors (see below), whose sum is σ = 312002085400. Its totient is φ = 311997958848.

The previous prime is 312000022111. The next prime is 312000022189. The reversal of 312000022123 is 321220000213.

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 312000022123 - 2⁵ = 312000022091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312000022097 and 312000022106.

It is not an unprimeable number, because it can be changed into a prime (312000022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785190 + ... + 1113787.

It is an arithmetic number, because the mean of its divisors is an integer number (78000521350).

Almost surely, 2^312000022123 is an apocalyptic number.

312000022123 is a deficient number, since it is larger than the sum of its proper divisors (2063277).

312000022123 is a wasteful number, since it uses less digits than its factorization.

312000022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063276.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 312000022123 its reverse (321220000213), we get a palindrome (633220022336).

The spelling of 312000022123 in words is "three hundred twelve billion, twenty-two thousand, one hundred twenty-three".