212311093 has 2 divisors, whose sum is σ = 212311094. Its totient is φ = 212311092.

The previous prime is 212311061. The next prime is 212311103. The reversal of 212311093 is 390113212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211789809 + 521284 = 14553^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 212311093 - 2⁵ = 212311061 is a prime.

It is a super-4 number, since 4×212311093⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212311003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155546 + 106155547.

It is an arithmetic number, because the mean of its divisors is an integer number (106155547).

Almost surely, 2^212311093 is an apocalyptic number.

It is an amenable number.

212311093 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311093 is an equidigital number, since it uses as much as digits as its factorization.

212311093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 212311093 is about 14570.8988398108. The cubic root of 212311093 is about 596.5647142610.

The spelling of 212311093 in words is "two hundred twelve million, three hundred eleven thousand, ninety-three".