211300993 has 4 divisors (see below), whose sum is σ = 211336128. Its totient is φ = 211265860.

The previous prime is 211300987. The next prime is 211300997. The reversal of 211300993 is 399003112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211300993 - 2¹³ = 211292801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211300997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013 + ... + 21418.

It is an arithmetic number, because the mean of its divisors is an integer number (52834032).

Almost surely, 2^211300993 is an apocalyptic number.

It is an amenable number.

211300993 is a deficient number, since it is larger than the sum of its proper divisors (35135).

211300993 is an equidigital number, since it uses as much as digits as its factorization.

211300993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35134.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 211300993 is about 14536.1959604293. The cubic root of 211300993 is about 595.6171296279.

The spelling of 211300993 in words is "two hundred eleven million, three hundred thousand, nine hundred ninety-three".