211520463 has 24 divisors (see below), whose sum is σ = 354286464. Its totient is φ = 109879440.

The previous prime is 211520459. The next prime is 211520479. The reversal of 211520463 is 364025112.

It is not a de Polignac number, because 211520463 - 2² = 211520459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211520063) 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 23 ways as a sum of consecutive naturals, for example, 39081 + ... + 44162.

It is an arithmetic number, because the mean of its divisors is an integer number (14761936).

Almost surely, 2^211520463 is an apocalyptic number.

211520463 is a deficient number, since it is larger than the sum of its proper divisors (142766001).

211520463 is a wasteful number, since it uses less digits than its factorization.

211520463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83275 (or 83264 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 211520463 is about 14543.7430876649. The cubic root of 211520463 is about 595.8232729399.

Adding to 211520463 its reverse (364025112), we get a palindrome (575545575).

It can be divided in two parts, 2115 and 20463, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 211520463 in words is "two hundred eleven million, five hundred twenty thousand, four hundred sixty-three".