213103545 has 16 divisors (see below), whose sum is σ = 341442432. Its totient is φ = 113496320.

The previous prime is 213103543. The next prime is 213103547. The reversal of 213103545 is 545301312.

It is an interprime number because it is at equal distance from previous prime (213103543) and next prime (213103547).

It is not a de Polignac number, because 213103545 - 2¹ = 213103543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213103543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585 + ... + 20705.

It is an arithmetic number, because the mean of its divisors is an integer number (21340152).

Almost surely, 2^213103545 is an apocalyptic number.

It is an amenable number.

213103545 is a deficient number, since it is larger than the sum of its proper divisors (128338887).

213103545 is a wasteful number, since it uses less digits than its factorization.

213103545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19872.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 213103545 is about 14598.0664815584. The cubic root of 213103545 is about 597.3060194402.

Adding to 213103545 its reverse (545301312), we get a palindrome (758404857).

It can be divided in two parts, 2131035 and 45, that added together give a triangular number (2131080 = T₂₀₆₄).

The spelling of 213103545 in words is "two hundred thirteen million, one hundred three thousand, five hundred forty-five".