213011984 has 20 divisors (see below), whose sum is σ = 415727484. Its totient is φ = 105727488.

The previous prime is 213011951. The next prime is 213011987. The reversal of 213011984 is 489110312.

It can be written as a sum of positive squares in 2 ways, for example, as 150601984 + 62410000 = 12272^2 + 7900^2 .

It is not an unprimeable number, because it can be changed into a prime (213011987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46397 + ... + 50780.

Almost surely, 2^213011984 is an apocalyptic number.

It is an amenable number.

213011984 is a deficient number, since it is larger than the sum of its proper divisors (202715500).

213011984 is a wasteful number, since it uses less digits than its factorization.

213011984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97322 (or 97316 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 213011984 is about 14594.9300786266. The cubic root of 213011984 is about 597.2204620164.

The spelling of 213011984 in words is "two hundred thirteen million, eleven thousand, nine hundred eighty-four".