312111023203 has 16 divisors (see below), whose sum is σ = 358449629184. Its totient is φ = 266212362240.

The previous prime is 312111023197. The next prime is 312111023209. The reversal of 312111023203 is 302320111213.

It is an interprime number because it is at equal distance from previous prime (312111023197) and next prime (312111023209).

It is a cyclic number.

It is not a de Polignac number, because 312111023203 - 2⁵ = 312111023171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312111023209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1695276 + ... + 1870342.

It is an arithmetic number, because the mean of its divisors is an integer number (22403101824).

Almost surely, 2^312111023203 is an apocalyptic number.

312111023203 is a deficient number, since it is larger than the sum of its proper divisors (46338605981).

312111023203 is a wasteful number, since it uses less digits than its factorization.

312111023203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176322.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312111023203 its reverse (302320111213), we get a palindrome (614431134416).

The spelling of 312111023203 in words is "three hundred twelve billion, one hundred eleven million, twenty-three thousand, two hundred three".