312120030203 has 2 divisors, whose sum is σ = 312120030204. Its totient is φ = 312120030202.

The previous prime is 312120030199. The next prime is 312120030217. The reversal of 312120030203 is 302030021213.

It is a weak prime.

It is an emirp because it is prime and its reverse (302030021213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312120030203 - 2² = 312120030199 is a prime.

It is not a weakly prime, because it can be changed into another prime (312120030223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156060015101 + 156060015102.

It is an arithmetic number, because the mean of its divisors is an integer number (156060015102).

Almost surely, 2^312120030203 is an apocalyptic number.

312120030203 is a deficient number, since it is larger than the sum of its proper divisors (1).

312120030203 is an equidigital number, since it uses as much as digits as its factorization.

312120030203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 312120030203 its reverse (302030021213), we get a palindrome (614150051416).

The spelling of 312120030203 in words is "three hundred twelve billion, one hundred twenty million, thirty thousand, two hundred three".