213103612 has 6 divisors (see below), whose sum is σ = 372931328. Its totient is φ = 106551804.

The previous prime is 213103559. The next prime is 213103613. The reversal of 213103612 is 216301312.

It is a self number, because there is not a number n which added to its sum of digits gives 213103612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26637948 + ... + 26637955.

Almost surely, 2^213103612 is an apocalyptic number.

It is an amenable number.

213103612 is a deficient number, since it is larger than the sum of its proper divisors (159827716).

213103612 is a wasteful number, since it uses less digits than its factorization.

213103612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53275907 (or 53275905 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 213103612 is about 14598.0687763827. The cubic root of 213103612 is about 597.3060820381.

Adding to 213103612 its reverse (216301312), we get a palindrome (429404924).

The spelling of 213103612 in words is "two hundred thirteen million, one hundred three thousand, six hundred twelve".