72311241 has 8 divisors (see below), whose sum is σ = 100607040. Its totient is φ = 46111472.

The previous prime is 72311237. The next prime is 72311243. The reversal of 72311241 is 14211327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72311241 - 2² = 72311237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72311243) 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 7 ways as a sum of consecutive naturals, for example, 523926 + ... + 524063.

It is an arithmetic number, because the mean of its divisors is an integer number (12575880).

Almost surely, 2^72311241 is an apocalyptic number.

It is an amenable number.

72311241 is a deficient number, since it is larger than the sum of its proper divisors (28295799).

72311241 is a wasteful number, since it uses less digits than its factorization.

72311241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048015.

The product of its digits is 336, while the sum is 21.

The square root of 72311241 is about 8503.6016487133. The cubic root of 72311241 is about 416.6153541789.

Adding to 72311241 its reverse (14211327), we get a palindrome (86522568).

The spelling of 72311241 in words is "seventy-two million, three hundred eleven thousand, two hundred forty-one".