312111122303 has 8 divisors (see below), whose sum is σ = 312524044800. Its totient is φ = 311698399320.

The previous prime is 312111122291. The next prime is 312111122317. The reversal of 312111122303 is 303221111213.

It is a happy number.

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 312111122303 - 2²⁰ = 312110073727 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 (312111122503) 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, 3221576 + ... + 3317042.

It is an arithmetic number, because the mean of its divisors is an integer number (39065505600).

Almost surely, 2^312111122303 is an apocalyptic number.

312111122303 is a deficient number, since it is larger than the sum of its proper divisors (412922497).

312111122303 is an equidigital number, since it uses as much as digits as its factorization.

312111122303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99757.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312111122303 its reverse (303221111213), we get a palindrome (615332233516).

The spelling of 312111122303 in words is "three hundred twelve billion, one hundred eleven million, one hundred twenty-two thousand, three hundred three".