211155413 has 16 divisors (see below), whose sum is σ = 247543296. Its totient is φ = 176344560.

The previous prime is 211155389. The next prime is 211155449. The reversal of 211155413 is 314551112.

Added to its reverse (314551112) it gives a triangular number (525706525 = T₃₂₄₂₅).

It is not a de Polignac number, because 211155413 - 2¹⁸ = 210893269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211155463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192998 + ... + 194088.

It is an arithmetic number, because the mean of its divisors is an integer number (15471456).

Almost surely, 2^211155413 is an apocalyptic number.

It is an amenable number.

211155413 is a deficient number, since it is larger than the sum of its proper divisors (36387883).

211155413 is a wasteful number, since it uses less digits than its factorization.

211155413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its digits is 600, while the sum is 23.

The square root of 211155413 is about 14531.1875977155. The cubic root of 211155413 is about 595.4803107996.

Adding to 211155413 its reverse (314551112), we get a triangular number (525706525 = T₃₂₄₂₅).

The spelling of 211155413 in words is "two hundred eleven million, one hundred fifty-five thousand, four hundred thirteen".