213040241 has 4 divisors (see below), whose sum is σ = 213102912. Its totient is φ = 212977572.

The previous prime is 213040229. The next prime is 213040249. The reversal of 213040241 is 142040312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213040241 - 2¹⁴ = 213023857 is a prime.

It is a super-2 number, since 2×213040241² = 90772288570676162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213040249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25925 + ... + 33138.

It is an arithmetic number, because the mean of its divisors is an integer number (53275728).

Almost surely, 2^213040241 is an apocalyptic number.

It is an amenable number.

213040241 is a deficient number, since it is larger than the sum of its proper divisors (62671).

213040241 is an equidigital number, since it uses as much as digits as its factorization.

213040241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62670.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 213040241 is about 14595.8980881616. The cubic root of 213040241 is about 597.2468688444.

Adding to 213040241 its reverse (142040312), we get a palindrome (355080553).

The spelling of 213040241 in words is "two hundred thirteen million, forty thousand, two hundred forty-one".