312002111 has 2 divisors, whose sum is σ = 312002112. Its totient is φ = 312002110.

The previous prime is 312002083. The next prime is 312002137. The reversal of 312002111 is 111200213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312002111 - 2²² = 307807807 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 312002092 and 312002101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312008111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156001055 + 156001056.

It is an arithmetic number, because the mean of its divisors is an integer number (156001056).

Almost surely, 2^312002111 is an apocalyptic number.

312002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

312002111 is an equidigital number, since it uses as much as digits as its factorization.

312002111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 312002111 is about 17663.5814884751. The cubic root of 312002111 is about 678.2438182676.

Adding to 312002111 its reverse (111200213), we get a palindrome (423202324).

The spelling of 312002111 in words is "three hundred twelve million, two thousand, one hundred eleven".