211434493 has 2 divisors, whose sum is σ = 211434494. Its totient is φ = 211434492.

The previous prime is 211434481. The next prime is 211434557. The reversal of 211434493 is 394434112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175218169 + 36216324 = 13237^2 + 6018^2 .

It is a cyclic number.

It is not a de Polignac number, because 211434493 - 2¹³ = 211426301 is a prime.

It is a super-3 number, since 3×211434493³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211434463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105717246 + 105717247.

It is an arithmetic number, because the mean of its divisors is an integer number (105717247).

Almost surely, 2^211434493 is an apocalyptic number.

It is an amenable number.

211434493 is a deficient number, since it is larger than the sum of its proper divisors (1).

211434493 is an equidigital number, since it uses as much as digits as its factorization.

211434493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 211434493 is about 14540.7872207800. The cubic root of 211434493 is about 595.7425402183.

The spelling of 211434493 in words is "two hundred eleven million, four hundred thirty-four thousand, four hundred ninety-three".