241831661 has 4 divisors (see below), whose sum is σ = 241995132. Its totient is φ = 241668192.

The previous prime is 241831643. The next prime is 241831687. The reversal of 241831661 is 166138142.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166138142 = 2 ⋅83069071.

It can be written as a sum of positive squares in 2 ways, for example, as 169156036 + 72675625 = 13006^2 + 8525^2 .

It is a cyclic number.

It is not a de Polignac number, because 241831661 - 2¹⁰ = 241830637 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 (241831621) 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, 79496 + ... + 82481.

It is an arithmetic number, because the mean of its divisors is an integer number (60498783).

Almost surely, 2^241831661 is an apocalyptic number.

It is an amenable number.

241831661 is a deficient number, since it is larger than the sum of its proper divisors (163471).

241831661 is a wasteful number, since it uses less digits than its factorization.

241831661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163470.

The product of its digits is 6912, while the sum is 32.

The square root of 241831661 is about 15550.9376244650. The cubic root of 241831661 is about 623.0234397783.

The spelling of 241831661 in words is "two hundred forty-one million, eight hundred thirty-one thousand, six hundred sixty-one".