213556141 has 4 divisors (see below), whose sum is σ = 214350300. Its totient is φ = 212761984.

The previous prime is 213556121. The next prime is 213556151. The reversal of 213556141 is 141655312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78322500 + 135233641 = 8850^2 + 11629^2 .

It is a cyclic number.

It is not a de Polignac number, because 213556141 - 2¹³ = 213547949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213556121) 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 3 ways as a sum of consecutive naturals, for example, 396676 + ... + 397213.

It is an arithmetic number, because the mean of its divisors is an integer number (53587575).

Almost surely, 2^213556141 is an apocalyptic number.

It is an amenable number.

213556141 is a deficient number, since it is larger than the sum of its proper divisors (794159).

213556141 is an equidigital number, since it uses as much as digits as its factorization.

213556141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794158.

The product of its digits is 3600, while the sum is 28.

The square root of 213556141 is about 14613.5601753987. The cubic root of 213556141 is about 597.7285795253.

The spelling of 213556141 in words is "two hundred thirteen million, five hundred fifty-six thousand, one hundred forty-one".