241320509 has 4 divisors (see below), whose sum is σ = 241467804. Its totient is φ = 241173216.

The previous prime is 241320503. The next prime is 241320529. The reversal of 241320509 is 905023142.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905023142 = 2 ⋅452511571.

It can be written as a sum of positive squares in 2 ways, for example, as 88303609 + 153016900 = 9397^2 + 12370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241320509 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 (241320503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71162 + ... + 74475.

It is an arithmetic number, because the mean of its divisors is an integer number (60366951).

Almost surely, 2^241320509 is an apocalyptic number.

It is an amenable number.

241320509 is a deficient number, since it is larger than the sum of its proper divisors (147295).

241320509 is a wasteful number, since it uses less digits than its factorization.

241320509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147294.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 241320509 is about 15534.4941662096. The cubic root of 241320509 is about 622.5841751089.

It can be divided in two parts, 2413 and 20509, that added together give a palindrome (22922).

The spelling of 241320509 in words is "two hundred forty-one million, three hundred twenty thousand, five hundred nine".