213103639 has 8 divisors (see below), whose sum is σ = 256365440. Its totient is φ = 173046456.

The previous prime is 213103613. The next prime is 213103643. The reversal of 213103639 is 936301312.

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

It is a cyclic number.

It is not a de Polignac number, because 213103639 - 2⁷ = 213103511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801009 + ... + 801274.

It is an arithmetic number, because the mean of its divisors is an integer number (32045680).

Almost surely, 2^213103639 is an apocalyptic number.

213103639 is a deficient number, since it is larger than the sum of its proper divisors (43261801).

213103639 is a wasteful number, since it uses less digits than its factorization.

213103639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602309.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 213103639 is about 14598.0697011625. The cubic root of 213103639 is about 597.3061072641.

The spelling of 213103639 in words is "two hundred thirteen million, one hundred three thousand, six hundred thirty-nine".