211355413 has 2 divisors, whose sum is σ = 211355414. Its totient is φ = 211355412.

The previous prime is 211355401. The next prime is 211355429. The reversal of 211355413 is 314553112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132181009 + 79174404 = 11497^2 + 8898^2 .

It is a cyclic number.

It is not a de Polignac number, because 211355413 - 2⁹ = 211354901 is a prime.

It is a super-2 number, since 2×211355413² = 89342221208801138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211655413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105677706 + 105677707.

It is an arithmetic number, because the mean of its divisors is an integer number (105677707).

Almost surely, 2^211355413 is an apocalyptic number.

It is an amenable number.

211355413 is a deficient number, since it is larger than the sum of its proper divisors (1).

211355413 is an equidigital number, since it uses as much as digits as its factorization.

211355413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 211355413 is about 14538.0677189233. The cubic root of 211355413 is about 595.6682584331.

The spelling of 211355413 in words is "two hundred eleven million, three hundred fifty-five thousand, four hundred thirteen".