213031103 has 8 divisors (see below), whose sum is σ = 215300400. Its totient is φ = 210768768.

The previous prime is 213031069. The next prime is 213031153. The reversal of 213031103 is 301130312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213031103 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 (213031153) 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, 78788 + ... + 81446.

It is an arithmetic number, because the mean of its divisors is an integer number (26912550).

Almost surely, 2^213031103 is an apocalyptic number.

213031103 is a deficient number, since it is larger than the sum of its proper divisors (2269297).

213031103 is a wasteful number, since it uses less digits than its factorization.

213031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 213031103 is about 14595.5850516517. The cubic root of 213031103 is about 597.2383294249.

Adding to 213031103 its reverse (301130312), we get a palindrome (514161415).

It can be divided in two parts, 2130 and 31103, that added together give a palindrome (33233).

The spelling of 213031103 in words is "two hundred thirteen million, thirty-one thousand, one hundred three".