213103345 has 16 divisors (see below), whose sum is σ = 314737920. Its totient is φ = 134887104.

The previous prime is 213103343. The next prime is 213103357. The reversal of 213103345 is 543301312.

It is a cyclic number.

It is not a de Polignac number, because 213103345 - 2¹ = 213103343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213103343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233725 + ... + 234634.

It is an arithmetic number, because the mean of its divisors is an integer number (19671120).

Almost surely, 2^213103345 is an apocalyptic number.

It is an amenable number.

213103345 is a deficient number, since it is larger than the sum of its proper divisors (101634575).

213103345 is a wasteful number, since it uses less digits than its factorization.

213103345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468384.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 213103345 is about 14598.0596313346. The cubic root of 213103345 is about 597.3058325807.

Adding to 213103345 its reverse (543301312), we get a palindrome (756404657).

The spelling of 213103345 in words is "two hundred thirteen million, one hundred three thousand, three hundred forty-five".