312113021203 has 2 divisors, whose sum is σ = 312113021204. Its totient is φ = 312113021202.

The previous prime is 312113021201. The next prime is 312113021219. The reversal of 312113021203 is 302120311213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312113021203 - 2¹ = 312113021201 is a prime.

Together with 312113021201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312113021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156056510601 + 156056510602.

It is an arithmetic number, because the mean of its divisors is an integer number (156056510602).

Almost surely, 2^312113021203 is an apocalyptic number.

312113021203 is a deficient number, since it is larger than the sum of its proper divisors (1).

312113021203 is an equidigital number, since it uses as much as digits as its factorization.

312113021203 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 19.

Adding to 312113021203 its reverse (302120311213), we get a palindrome (614233332416).

The spelling of 312113021203 in words is "three hundred twelve billion, one hundred thirteen million, twenty-one thousand, two hundred three".