210311072 has 24 divisors (see below), whose sum is σ = 415088100. Its totient is φ = 104891904.

The previous prime is 210311053. The next prime is 210311089. The reversal of 210311072 is 270113012.

It can be written as a sum of positive squares in 2 ways, for example, as 207475216 + 2835856 = 14404^2 + 1684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210311072.

It is an unprimeable number.

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, 5054 + ... + 21122.

Almost surely, 2^210311072 is an apocalyptic number.

It is an amenable number.

210311072 is a deficient number, since it is larger than the sum of its proper divisors (204777028).

210311072 is a wasteful number, since it uses less digits than its factorization.

210311072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16488 (or 16480 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 210311072 is about 14502.1057781275. The cubic root of 210311072 is about 594.6855405898.

Adding to 210311072 its reverse (270113012), we get a palindrome (480424084).

The spelling of 210311072 in words is "two hundred ten million, three hundred eleven thousand, seventy-two".