72310241 has 2 divisors, whose sum is σ = 72310242. Its totient is φ = 72310240.

The previous prime is 72310211. The next prime is 72310267. The reversal of 72310241 is 14201327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56190016 + 16120225 = 7496^2 + 4015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72310241 is a prime.

It is a super-3 number, since 3×72310241³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72310211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36155120 + 36155121.

It is an arithmetic number, because the mean of its divisors is an integer number (36155121).

Almost surely, 2^72310241 is an apocalyptic number.

It is an amenable number.

72310241 is a deficient number, since it is larger than the sum of its proper divisors (1).

72310241 is an equidigital number, since it uses as much as digits as its factorization.

72310241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72310241 is about 8503.5428498950. The cubic root of 72310241 is about 416.6134336971.

Adding to 72310241 its reverse (14201327), we get a palindrome (86511568).

The spelling of 72310241 in words is "seventy-two million, three hundred ten thousand, two hundred forty-one".