212311019 has 2 divisors, whose sum is σ = 212311020. Its totient is φ = 212311018.

The previous prime is 212311003. The next prime is 212311039. The reversal of 212311019 is 910113212.

It is an a-pointer prime, because the next prime (212311039) can be obtained adding 212311019 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212311019 - 2⁴ = 212311003 is a prime.

It is a super-2 number, since 2×212311019² = 90151937577636722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_11722061 and since 212311019 and 11722061 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (212311039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155509 + 106155510.

It is an arithmetic number, because the mean of its divisors is an integer number (106155510).

Almost surely, 2^212311019 is an apocalyptic number.

212311019 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311019 is an equidigital number, since it uses as much as digits as its factorization.

212311019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 212311019 is about 14570.8963005026. The cubic root of 212311019 is about 596.5646449511.

The spelling of 212311019 in words is "two hundred twelve million, three hundred eleven thousand, nineteen".