213745441 has 8 divisors (see below), whose sum is σ = 263071424. Its totient is φ = 169117200.

The previous prime is 213745439. The next prime is 213745451. The reversal of 213745441 is 144547312.

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

It is not a de Polignac number, because 213745441 - 2¹ = 213745439 is a prime.

It is a super-2 number, since 2×213745441² = 91374227096568962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213745451) 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 7 ways as a sum of consecutive naturals, for example, 1174335 + ... + 1174516.

It is an arithmetic number, because the mean of its divisors is an integer number (32883928).

Almost surely, 2^213745441 is an apocalyptic number.

It is an amenable number.

213745441 is a deficient number, since it is larger than the sum of its proper divisors (49325983).

213745441 is a wasteful number, since it uses less digits than its factorization.

213745441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348871.

The product of its digits is 13440, while the sum is 31.

The square root of 213745441 is about 14620.0356018718. The cubic root of 213745441 is about 597.9051398173.

The spelling of 213745441 in words is "two hundred thirteen million, seven hundred forty-five thousand, four hundred forty-one".