213103312 has 10 divisors (see below), whose sum is σ = 412887698. Its totient is φ = 106551648.

The previous prime is 213103309. The next prime is 213103327. The reversal of 213103312 is 213301312.

213103312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 142945936 + 70157376 = 11956^2 + 8376^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 13318957 = 213103312 / (2 + 1 + 3 + 1 + 0 + 3 + 3 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6659463 + ... + 6659494.

Almost surely, 2^213103312 is an apocalyptic number.

It is an amenable number.

213103312 is a deficient number, since it is larger than the sum of its proper divisors (199784386).

213103312 is a wasteful number, since it uses less digits than its factorization.

213103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13318965 (or 13318959 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213103312 is about 14598.0585010473. The cubic root of 213103312 is about 597.3058017489.

Adding to 213103312 its reverse (213301312), we get a palindrome (426404624).

The spelling of 213103312 in words is "two hundred thirteen million, one hundred three thousand, three hundred twelve".