241861681 has 4 divisors (see below), whose sum is σ = 241895232. Its totient is φ = 241828132.

The previous prime is 241861639. The next prime is 241861727. The reversal of 241861681 is 186168142.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 241861681 - 2¹¹ = 241859633 is a prime.

It is a super-2 number, since 2×241861681² = 116994145472291522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 241861681.

It is not an unprimeable number, because it can be changed into a prime (241861481) 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, 1045 + ... + 22018.

It is an arithmetic number, because the mean of its divisors is an integer number (60473808).

Almost surely, 2^241861681 is an apocalyptic number.

It is an amenable number.

241861681 is a deficient number, since it is larger than the sum of its proper divisors (33551).

241861681 is a wasteful number, since it uses less digits than its factorization.

241861681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33550.

The product of its digits is 18432, while the sum is 37.

The square root of 241861681 is about 15551.9028096243. The cubic root of 241861681 is about 623.0492185779.

The spelling of 241861681 in words is "two hundred forty-one million, eight hundred sixty-one thousand, six hundred eighty-one".