213523045 has 8 divisors (see below), whose sum is σ = 269713440. Its totient is φ = 161827920.

The previous prime is 213523033. The next prime is 213523049. The reversal of 213523045 is 540325312.

213523045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213523045 - 2¹⁹ = 212998757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213523049) 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, 1123711 + ... + 1123900.

It is an arithmetic number, because the mean of its divisors is an integer number (33714180).

Almost surely, 2^213523045 is an apocalyptic number.

It is an amenable number.

213523045 is a deficient number, since it is larger than the sum of its proper divisors (56190395).

213523045 is a wasteful number, since it uses less digits than its factorization.

213523045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247635.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 213523045 is about 14612.4277585896. The cubic root of 213523045 is about 597.6977001400.

Adding to 213523045 its reverse (540325312), we get a palindrome (753848357).

The spelling of 213523045 in words is "two hundred thirteen million, five hundred twenty-three thousand, forty-five".