213143982 has 8 divisors (see below), whose sum is σ = 426287976. Its totient is φ = 71047992.

The previous prime is 213143981. The next prime is 213143993. The reversal of 213143982 is 289341312.

213143982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

213143982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213143981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17761993 + ... + 17762004.

It is an arithmetic number, because the mean of its divisors is an integer number (53285997).

Almost surely, 2^213143982 is an apocalyptic number.

213143982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213143982 is a wasteful number, since it uses less digits than its factorization.

213143982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35524002.

The product of its digits is 10368, while the sum is 33.

The square root of 213143982 is about 14599.4514280503. The cubic root of 213143982 is about 597.3437972193.

The spelling of 213143982 in words is "two hundred thirteen million, one hundred forty-three thousand, nine hundred eighty-two".