211533982 has 16 divisors (see below), whose sum is σ = 347007600. Its totient is φ = 95912640.

The previous prime is 211533961. The next prime is 211534007. The reversal of 211533982 is 289335112.

211533982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2757 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (21687975).

Almost surely, 2^211533982 is an apocalyptic number.

211533982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211533982 is a deficient number, since it is larger than the sum of its proper divisors (135473618).

211533982 is a wasteful number, since it uses less digits than its factorization.

211533982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23931.

The product of its digits is 12960, while the sum is 34.

The square root of 211533982 is about 14544.2078505500. The cubic root of 211533982 is about 595.8359663741.

The spelling of 211533982 in words is "two hundred eleven million, five hundred thirty-three thousand, nine hundred eighty-two".