213371968 has 28 divisors (see below), whose sum is σ = 423928540. Its totient is φ = 106555392.

The previous prime is 213371953. The next prime is 213371993. The reversal of 213371968 is 869173312.

It can be written as a sum of positive squares in 2 ways, for example, as 90782784 + 122589184 = 9528^2 + 11072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213371968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70780 + ... + 73732.

It is an arithmetic number, because the mean of its divisors is an integer number (15140305).

Almost surely, 2^213371968 is an apocalyptic number.

It is an amenable number.

213371968 is a deficient number, since it is larger than the sum of its proper divisors (210556572).

213371968 is a wasteful number, since it uses less digits than its factorization.

213371968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094 (or 4084 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 213371968 is about 14607.2573743328. The cubic root of 213371968 is about 597.5567010259.

The spelling of 213371968 in words is "two hundred thirteen million, three hundred seventy-one thousand, nine hundred sixty-eight".