213001045 has 32 divisors (see below), whose sum is σ = 276970752. Its totient is φ = 156828672.

The previous prime is 213001003. The next prime is 213001049. The reversal of 213001045 is 540100312.

It is a cyclic number.

It is not a de Polignac number, because 213001045 - 2⁷ = 213000917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213001049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480594 + ... + 481036.

It is an arithmetic number, because the mean of its divisors is an integer number (8655336).

Almost surely, 2^213001045 is an apocalyptic number.

It is an amenable number.

213001045 is a deficient number, since it is larger than the sum of its proper divisors (63969707).

213001045 is a wasteful number, since it uses less digits than its factorization.

213001045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 213001045 is about 14594.5553203926. Note that the first 3 decimals coincide. The cubic root of 213001045 is about 597.2102386378.

Adding to 213001045 its reverse (540100312), we get a palindrome (753101357).

The spelling of 213001045 in words is "two hundred thirteen million, one thousand, forty-five".