213132541 has 2 divisors, whose sum is σ = 213132542. Its totient is φ = 213132540.

The previous prime is 213132529. The next prime is 213132547. The reversal of 213132541 is 145231312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179828100 + 33304441 = 13410^2 + 5771^2 .

It is a cyclic number.

It is not a de Polignac number, because 213132541 - 2¹¹ = 213130493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213132547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106566270 + 106566271.

It is an arithmetic number, because the mean of its divisors is an integer number (106566271).

Almost surely, 2^213132541 is an apocalyptic number.

It is an amenable number.

213132541 is a deficient number, since it is larger than the sum of its proper divisors (1).

213132541 is an equidigital number, since it uses as much as digits as its factorization.

213132541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 213132541 is about 14599.0595930012. The cubic root of 213132541 is about 597.3331090879. Note that the first 3 decimals are identical.

Adding to 213132541 its reverse (145231312), we get a palindrome (358363853).

The spelling of 213132541 in words is "two hundred thirteen million, one hundred thirty-two thousand, five hundred forty-one".